Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 4105178 | Drum stand A stand device used in combination with a container such as a drum having substantially cylindrical configuration wherein at least two support legs are movable into and out of supporting relation. Each of the supporting legs comprises a configuration subs... | 08/08/1978 |
| 4079540 | Toy bank A toy bank device as disclosed for receiving and depositing coins comprising a base member adapted for location on a substantially horizontal surface and including base member mounting means. The base member has a base member orifice for receiving and sto... | 03/21/1978 |
| 4069993 | Bag supporting means An improved bag supporting means is disclosed for gripping a marginal portion of the mouth of a bag comprising a substantially vertical upright peg fixed at its lower end to a support. A resilient locking ring having an inside diameter less than the diame... | 01/24/1978 |
| 4067205 | Super cooler for an air conditioning system Water condensed from the air drawn over the refrigeration unit of an air conditioning system is collected and directed into a first chamber of a dual chamber reservoir where it is pumped through heat exchanger coils. The heat exchanger coils are placed up... | 01/10/1978 |
| 4067078 | Adjustable back supporter An adjustable back support comprising a plurality of individual compartments which may be either equally or variably dimensioned to hold predetermined amounts of fluid therein. Fluid, either in the form of air or liquid, or both, are introduced into the f... | 01/10/1978 |
| 4063595 | Air conditioning system having safety features for determining and for eliminating dangerous conditions in the form of fire, smoke, or unusually high temperatures An air conditioning system capable of regulating the temperature of incoming air and further comprising safety features relating to the sensing of abnormal conditions within a room or like treated area concerning the detection of fire, smoke or abnormally... | 12/20/1977 |
| 4061272 | Irrigation device An irrigation device in the form of an elongated conduit of predetermined length wherein the conduit comprises a one piece wall of plastic material formed by extrusion in a continuous length. The conduit comprises at least two compartments having specific... | 12/06/1977 |
| 4060866 | Pneumatic aquatic device An inflatable aquatic device is disclosed comprising in combination plural aquatic members each having a plurality of flexible gas chambers for containing a gas and providing buoyancy. Each of the plural aquatic members includes a rigid frame having a pla... | 12/06/1977 |
| 4058075 | Marine life growth inhibitor device A marine life growth inhibitor device is disclosed for inhibiting marine life on the outer surface of a submerged object such as a boat. The device includes a controller connected to a source of electrical power and a plurality of speakers electrically co... | 11/15/1977 |
| 4043100 | Cutting machine A cutting machine including a mobile housing having mounted thereon a cutting blade driven by a prime mover in the form of a motor or the like which also drives a source of fluid flow disposed in communicating relation with the cutting area defined by the... | 08/23/1977 |
| 4043083 | Sanding tool An endless belt sander comprising a drive pulley and an idle pulley to control an endless sanding or polishing belt having a length substantially longer than that required for surrounding the pulleys. The belt of any desired but applicable width and prede... | 08/23/1977 |
| 4038970 | Solar water heater An improved solar water heater construction is diclosed wherein unique intake and exhaust manifold structures are utilized to control the flow of water through a plurality of heater panels. By virtue of the construction of the manifolds and their cooperat... | 08/02/1977 |
| 4038945 | Breeding tank A breeding facility for fish and like marine life comprising a plurality of intercommunicating tanks arranged in interconnected relation to one another in a predetermined relation so as to establish a successive flow or path of travel of marine life throu... | 08/02/1977 |
| 4037640 | Tapestry holder This tapestry holder assembly for mounting tapestry on supporting surface comprises slide bar at least one pressure plate removably engaging the slide bar so that the tapestry is clamped between the pressure plate and the slide bar, a retainer assembly fo... | 07/26/1977 |
| 4035303 | Open mesh filter element A valve structure for a fluid dispenser primarily of the type known in the art as an aerosol dispenser incorporating a filter assembly comprising one or more filter elements each formed from an apertured, open mesh material of nylon or like synthetic fibe... | 07/12/1977 |
| 4021654 | Digital filter A MOS/LSI digital filter comprising multiplier circuitry with more than one serial multiplier section, accumulator circuitry with overflow correction and true sign logic, and coefficient circuitry is contained in special MOS/LSI devices.... | 05/03/1977 |
| 4019367 | Linearized odor transducer This invention relates to an improved method and apparatus for the detection and measurement of concentrations of foreign substances in a fluid, particularly atmospheric gas. Transducers and signal modifying devices are electronically connected in a prede... | 04/26/1977 |
