Easy To Use Patents Search & Patent Lawyer Directory

At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Patents are available using simple keyword or date criteria. If you are looking to hire a patent attorney, you've come to the right place. Protect your idea and hire a patent lawyer.

Searching: South Dakota





Search by keyword, patent number, inventor, assignee, city or state:




Patent # Description
US-5,030,977 Printed image magnetic signal level control apparatus and method
Magnetic signal level control apparatus for a printer or copier. A continuous sampling of the magnetic characteristics of a reference mark results in constantly...
US-5,030,230 Corneal implant
An implant prosthesis and method for replacing a full or partial thickness of a cornea. The prosthesis includes a transparent lens portion, and a carrier of...
US-5,028,147 Integrated container for meat products
The invention is an integrated container structure in which a sealable envelope of flexible material such as plastic, has disposed within it a carton of...
US-5,025,736 Furrow opener
A furrow opener and press wheel for an agricultural implement to place fertilizer and seed at different depths in soil has replaceable abrasive resistant plastic...
US-D317,669 Windshield ice scraper
US-5,020,447 Tank car discharge valve heating unit
A railway car heated by steam through a heat exchanger located at the bottom of a tank, the heat exchanger comprising a torus sleeved about a discharge valve in...
US-5,020,260 Take-down rifle
A take-down rifle which permits easy removal and reassembly of the barrel to the receiver portion of the rifle and incorporating a system for effectively...
US-5,017,135 Trap and separator for denial vacuum systems
A dental vacuum system includes a sludge trap and liquid separator between dental operatories and a vacuum source (vacuum pump). The sludge trap separates out...
US-5,012,070 Vehicle preheating system using existing vehicle heating system
A vehicle preheating system which provides for the preheating of the vehicle interior, as well as other components, is disclosed. The system includes an...
US-5,011,111 Damping control device
A damping control device which can be used to control the rate of movement or prevent the movement of a handle or other control means, such as a handle which is...
US-5,011,076 Pneumatic temperature control
A pneumatic temperature control unit having a fluid receptacle containing a fluid capable of expanding or contracting with temperature. The fluid receptacle...
US-5,011,025 Feeder for seed cleaner
A feeding mechanism adpated to feed seeds such as soybeans, navy or pinto beans into a cleaning device. The feeder includes a hopper which is supplied by a hose...
US-5,010,414 Process eliminating the use of a master positive film for making a duplicate negative of a color motion picture
Process for making an improved duplicate negative from an original color motion picture negative by using optical color filters with flying spot scanning of the...
US-D316,440 Free weight safety rack
US-D316,169 Combined ironing board and cabinet therefor
US-5,004,849 Manufacture of perchloroethylene and trichloroethylene by catalytic oxychlorination, and improved catalysts...
A superior catalyst for the oxychlorination of C.sub.2 hydrocarbon feeds comprises a mixture of copper chloride and alkali metal chloride, for instance,...
US-5,004,500 Chlorination process for recovering gold values from gold alloys
A process for the recovery of precious metal values as essentially pure gold from gold alloys in the form of thin strips 0.05 to 0.25 inch thick having a gold...
US-5,003,177 Coaxial cable with screening electrode for use as an ionization chamber
The invention relates to a coaxial cable for use as an ionization chamber with an inner signal electrode (1) and an outer high-voltage electrode (2), surrounding...
US-4,997,165 Safety rail for collapsible bleachers
A collapsible bleacher safety railing for use in conjunction with collapsible bleacher assemblies which are well known and in common use. The railing includes...
US-4,997,104 Container reclosing apparatus and method
A closure apparatus which includes a scroll-like closure panel of flexible material is used to resealably close the open end of a bag-like container. The closure...
US-4,996,517 Household alarm system
An alarm system providing external alarm signals for a structure. The alarm system includes transmitters for generating coded radio trigger signals. An alarm...
US-4,996,516 Indicator of under inflated tire
An indicating device adapted to indicate a flat or severely underinflated tire. The device is activated by the enlargement in the diameter of the underinflated...
US-4,993,869 Concrete finishing machine with vibrating finishing rollers
A concrete finishing machine includes a surfacing unit having one or more finishing rollers supported on the surfacing unit carriage by a finishing roller...
US-4,991,878 Label assembly with removable booklet
A label assembly includes a base label, informational material, and a clear over-laminate sheet. The informational material is completely encased between the...
US-4,990,100 Device for securing two cords together
A device for securing the ends of two electrical cords together includes two base elements. Each of the base elements is attached to a respective end of a cord...
US-4,987,701 Endless belt valve grinder
An endless belt valve grinder for refacing valve heads used in internal combustion engines. Grinding is done by rotating the valve face against a moving endless...
US-4,986,311 Apparatus for clearing frozen water lines
Apparatus for clearing frozen water lines or conduits includes a wheel mounted cart or main frame supporting a holding tank or reservoir open to the atmosphere...
US-D313,804 Side plate for an earthworking seed planting and fertilizing tool
US-D312,721 Tunic
US-4,974,548 Adjustable feeder for livestock
An improvement in livestock feeders of the type using sliding compartments to measure feed comprising comparatively thin vertical walls for the compartments. The...
US-D312,507 Decorative article support adapted to fit into an empty candle holder
US-4,967,942 Lawn chair rack
A lawn chair rack includes a generally vertical oriented frame removably mounted to the rearward bumper of a trailer. A pair of tubular members are mounted to...
US-4,964,796 Swag centerpiece with taper candle/chimney glass insert
An adapter (70) for supporting a taper candle and chimney glass on a candle ring (16) in a centerpiece arrangement includes a plate (72), a candle holder (76),...
US-4,963,094 Vacuum controller and filter assembly for dental vacuum system
A multi-function control component for use in dental vacuum systems includes, within a single housing, a vacuum control device for controlling the vacuum...
US-D311,326 Truck floor bed tie-down device
US-D311,230 Guardian angel doll
US-4,960,242 Asphalt distributor
An asphalt distributor has a spray bar assembly that includes at least one extendable and retractable spray bar section for extending the overall width of the...
US-4,958,565 Inflatable decelerator
A decelerator structure for attachment to a munition to be deployed formed of a first triangular section of cloth with apexes and straight sides to provide a...
US-4,955,631 Fifth wheel coupling for allowing and controlling side to side sway
The present fifth wheel sway hitch connects the frame of a mobile camper to the fore and aft tiltable fifth wheel mounting in the box of a pickup truck. The...
US-4,953,454 Steam chamber
An apparatus is provided which is designed to be connected to a steam source for steaming materials therein. In particular, the apparatus is designed to steam...
US-D310,317 Three compartment pastry bag
US-4,952,755 Safety plate for electrical outlet
A safety plate for electrical outlets includes a cover plate having apertures therein for receiving the prongs of an electrical plug. A pair of slidable panels...
US-4,951,377 Core sizing method
A method for predeterminately sizing a core using a pair of generally opposed die means operable for compressing only an outer circumferential section of the...
US-4,949,650 Table having a part of which is adjustable upwardly
A table adapted to be used as a coffee table having a top, all or part of which can be raised and moved laterally on struts forming a part of the legs of the...
US-4,946,723 Tamper-proof sealing strip with a tear tab and a container
A sealing strip with a tear tab and tear strip for the sealing strip, also in combination with a container, including an embodiment to a sealing strip for...
US-4,943,106 Trailer having swing-out side extensions
An equipment trailer having swing-out side extensions provided at each side thereof to enable the overall width of the trailer to be increased when over-width...
US-4,941,218 Seat structure for easy access to bathtubs
A seat structure for providing easy access to bathtubs includes a seat platform retainer bracket having a top, horizontally extending, J-shape platform-retaining...
US-4,940,913 Core for a dynamoelectric machine
A core for a dynamoelectric machine has a stack of generally thin ferromagnetic material. The stack includes a pair of opposite end faces, a pair of generally...
US-4,938,310 Scaffold lift
A device which is easily attached to the side of a scaffold for lifting objects up the side of the scaffold. The device consists of a carriage which has a...
US-4,936,169 Device for positioning and applying fasteners
A device for positioning and applying fasteners, such as screws, to a work object is disclosed which includes an applicator positioned adjacent to a rotatable...
← Previous | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | Next →

File A Patent Application

  • Protect your idea -- Don't let someone else file first. Learn more.

  • 3 Easy Steps -- Complete Form, application Review, and File. See our process.

  • Attorney Review -- Have your application reviewed by a Patent Attorney. See what's included.