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Patent # Description
US-4,021,527 Production of sodium carbonate
Method of preparing refined, dense soda ash from crude trona by calcining the crude trona to crude sodium carbonate, mixing the crude sodium carbonate with an...
US-4,019,872 Producing sodium carbonate monohydrate from carbonate solution including addition of aluminum ions
Process for producing high bulk density sodium carbonate monohydrate crystals from sodium carbonate solutions wherein the sodium carbonate monohydrate is...
US-4,015,699 Alphanumeric serial printer with a flexible membrane printing element
A serial printer is provided with a multi-position flexible membrane printing element with columns and rows of print characters disposed coplanarly in spaced...
US-4,015,345 Multiplication learning aid device
A device designed to be used in elementary school classrooms in conjunction with an overhead projector to teach and enforce the concept of multiplication to...
US-D243,724 Jacket
US-D243,723 Vest
US-4,011,657 Knife
A knife having a handle adapted to interchangeably receive in releasable interlocking relationship a variety of blade configurations. Each blade includes an...
US-4,010,563 Animal identification tag
The invention provides an improved animal identification tag for attachment to the ear of an animal, which stands up when attached to the ear to provide for...
US-4,007,901 Christmas tree stand
A low cost, easily installed, support base for Christmas trees and the like including a water retaining base support vessel, and an angulated base on which the...
US-4,007,697 Stoker actuated coal burning apparatus
The apparatus includes a feed box with a horizontal intake port for connection to a stoker feed and a vertical discharge port for transmitting coal to the...
US-4,005,772 Automatic justifying typewriter having pitch changing and line spacing apparatus
Automatic justifying typewriter includes incremental drive means operatively coupled to a printer for effecting controlled horizontal and vertical movement...
US-4,004,671 Wire matrix print head
A wire matrix print head for a dot matrix printer employs a plurality of electromagnetically actuated print wires converging forwardly through a wire guide...
US-4,003,678 Fluid operated well turbopump
A fluid operated turbopump, suitable for use in an oil well pumping system, is structurally adapted as either a hydraulically insertable and removable unit or as...
US-4,003,659 Single plane corner reflector guidance system
A laser attitude detection and guidance system which uses a number of gro base laser transmitter/detector stations and at least two retroreflecting arrays on...
US-4,003,340 Stock watering trough and stepped base therefor
This invention relates to a stock watering trough that is kept covered at all times when not in use by a pair of floating lid sections hingedly attached on...
US-4,000,589 Congruent modular building segments
A building formed by horizontally conjoining a plurality of congruent, self-supporting, sector-like modular building segments, each comprising a sector floor and...
US-D242,947 Deep fat fryer
US-3,999,550 External male catheter
An external male catheter device including a flexible external catheter tube adapted for application to the male organ to transmit urine voided by the patient, a...
US-3,999,064 Angular displacement measuring apparatus with strobe means
Cell boundary ambiguities associated with data read from tracks of sequential cells from a data source such as a coded disc are avoided by incorporating...
US-3,999,022 Electrical brush sensor apparatus useful for analog-to-digital converters
An analog-to-digital converter or encoder utilizes a combination of a standard photoelectric encoder and improved slow-friction long-lasting brush-type encoder...
US-D242,728 Insertion tool for an animal indentification tag
US-3,993,520 Windshield repair apparatus and method
An apparatus for repairing windshields and the method for using the apparatus wherein a liquid, curable resin material is forced into cracks in the windshield,...
US-3,993,164 Mounting and lubricating system for rotating machinery
A bearing arrangement and lubricant supply system for rotating machines, illustrated as embodied in a vacuum pump of the liquid vortex type comprises a...
US-3,991,976 Implement for driving and removing fence posts
A post removing device attaches to the handle of a post driving implement. The device includes a flat bar which is pivotally connected to the implement handle. A...
US-3,991,931 Decorative container
A decorative container is constructed from a substantially rectangular parallelepiped, such as a recycled cardboard milk carton, by tracing first and second...
US-3,988,243 Riser box
Spent drilling mud riser box construction maintaining a selected high mud level for test and gravity flow to a sand sampling device and an alternately used shale...
US-3,987,835 Double cord edge fastener
A fastener for attaching a flexible cover or sheet, such as a canvas tarpaulin, to a structure to provide a cover for the structure, and also to provide an...
US-3,986,594 Serial impact calculator printer
A serial impact printer of the type utilizing a dot matrix print head is specifically adaptable for use as a calculator or adding machine and is characterized by...
US-3,985,924 Artificial Christmas tree
A Christmas Tree formed of collapsible sections of trunk and branches with electrical lights mounted in sockets on each branch. Electrical conductors run from a...
US-3,981,686 Clarifier process for producing sodium carbonate
Method for clarifying a carbonate process solution containing suspended insolubles which solution is used in the preparation of crystals selected from the group...
US-3,980,046 Paper hanger's paste applicator
An elongated, open-topped bucket has a trapezoidal cross-section, with the smaller base below. The bottom of the bucket has an elongated slit into which...
US-3,979,847 Method for installing identification tag and tool therefor
An improved method and tool for installing an identification tag into the ear of an animal. The tool comprises a handle portion and an elongated insertion...
US-3,979,053 Refuse device
A refuse device for lining refuse passageway apertures and support members of whatever nature. The subject device includes a pair of flanges which are preferably...
US-3,977,960 Hydrocarbon recovery system
A system for the recovery of the vaporizable constituents of a particulate, hydrocarbon-containing composite. A suitable source material is continuously conveyed...
US-3,976,453 Liquid vortex vacuum pump
A vacuum pump of the liquid vortex type including a closed tank and a helical rotor for operation below the level of liquid therein is provided with a readily...
US-3,973,403 Closed cycle steam turbine system with liquid vortex pump
A closed cycle steam generating system comprising a steam boiler and a steam turbine includes a vacuum pump of the liquid vortex type for condensing the exhaust...
US-3,972,107 Method of forming shear sections in posts
Posts such as highway signs or reflector posts, exposed to impact by oncoming vehicles, are first anchored in the ground and then formed with a weakened fracture...
US-3,971,619 Safe electrical connector
A low cost, grounded electrical connector including an outlet receptacle and a plug that greatly reduces the possibility for injuries to children resulting from...
US-3,971,307 Deep fat fryer
This invention relates to a deep fat fryer characterized by a front-mounted control panel spanning the gap between the forwardly-extending arms of a generally...
US-3,969,854 Planing fin anchor
A ground or earth anchor adapted to be driven lengthwise into the ground or placed lengthwise in a pre-dug hole in the ground and then is tilted or rotated into...
US-3,969,853 Torque fin anchor
A torque fin ground anchor useful as a cable anchor or post anchor, has angled or tilted fins presenting large surface areas to the ground and radiating from a...
US-3,967,665 Adjustable routing template
A routing template assembly has been devised which is specifically adaptable for routing out slots of different widths in panels, boards and the like, such as...
US-3,965,607 Animal trap
An animal trap comprising a plurality of radially extending arms pivoted at their inner ends to a ring, and a noose extending through guides at the outer ends of...
US-3,965,602 Animal identification tag
The invention provides an improved animal identification tag for attachment to the ear of an animal, which stands up when attached to the ear to provide for...
US-3,965,417 Coherent component magnitude detector
The identification of random and coherent components of an unspecified sil wherein at least a pair of band pass filters, each having the same center frequency...
US-RE28,873 Scleral lens with attached tube
Means for scientifically supervised use when treating severe injuries and infections of the human eye. It enables a doctor or his nurse to administer a regulable...
US-3,958,807 Slotted-insert extraction puzzle
A first base piece including a pair of spaced outwardly projecting abutments having free outer end portions with generally aligned openings formed therethrough...
US-3,958,537 Oil and insecticide dispensing apparatus for livestock
There is herein disclosed oil and insecticide dispensing apparatus for livestock comprising a one-piece plastic valve housing frictionally retained in a mounting...
US-3,958,353 Two piece animal identification tag assembly
An animal identification tag assembly comprising an identification member and an attachment member. The identification member is mounted on the upper surface of...
US-3,956,840 Perforated animal identification tag
A tag for identification of animals comprising a portion for extending through the tissue of the animal and an identification means connected thereto, and having...
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