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Patent Number Title Of Patent Date Issued
4278167 Package for radiopharmaceutical compositions Jul. 14, 1981
4278166 Accumulator conveyor Jul. 14, 1981
4278165 Tray conveyor Jul. 14, 1981
4278164 Belt conveyor transportation system utilizing magnetic attraction Jul. 14, 1981
4278163 Wall mounted log chute Jul. 14, 1981
4278162 Friction disc Jul. 14, 1981
4278161 Coupling arrangement for an electromagnetic clutch Jul. 14, 1981
4278160 Viscous fluid coupling Jul. 14, 1981
4278159 Temperature controlled viscous fan drive Jul. 14, 1981
4278158 Fluid-friction clutch Jul. 14, 1981
4278157 Fluid clutch Jul. 14, 1981
4278156 Clutch engaging and disengaging means Jul. 14, 1981
4278155 Draw works transmission control Jul. 14, 1981
4278154 Vehicle floor mounted transmission shift lever with steering column backdrive linkage Jul. 14, 1981
4278153 Brake friction material with reinforcement material Jul. 14, 1981
4278152 Control mechanism for disc brakes Jul. 14, 1981
4278151 Brake assembly for a vehicle Jul. 14, 1981
4278150 Elevator system Jul. 14, 1981
4278149 Translationally movable idler gear as clutch for spring driven motor Jul. 14, 1981
4278148 Sawhorse Jul. 14, 1981
4278147 Muffler for engine, particularly motorcycle engine Jul. 14, 1981
4278146 Sound barrier Jul. 14, 1981
4278145 Concert shell Jul. 14, 1981
4278144 Reversible driving station for tractor vehicle Jul. 14, 1981
4278143 Parking brake release apparatus Jul. 14, 1981
4278142 Automatic guidance system for vehicles Jul. 14, 1981
4278141 Undercarriage for adverse terrain vehicle Jul. 14, 1981
4278140 Undercarriage for adverse terrain vehicle Jul. 14, 1981
4278139 Weighing apparatus with overload protection for off-center loading Jul. 14, 1981
4278138 Composite heavy metal drill collar Jul. 14, 1981
4278137 Apparatus for extracting minerals through a borehole Jul. 14, 1981
4278136 Sinkerdrill Jul. 14, 1981
4278135 Variable volume pneumatic drill Jul. 14, 1981
4278134 Implement for smoothing particulate material surfaces Jul. 14, 1981
4278133 Attachments for lawn edgers Jul. 14, 1981
4278132 Proportioning apparatus Jul. 14, 1981
4278131 Port apparatus for well piping Jul. 14, 1981
4278130 Access valve for drill stem testing Jul. 14, 1981
4278129 Stimulation of oil and gas wells with phosphate ester surfactants Jul. 14, 1981
4278128 Petroleum recovery chemical retention prediction technique Jul. 14, 1981
4278127 Apparatus for retrieving drill collars Jul. 14, 1981
4278126 Heat exchanger for furnace flue Jul. 14, 1981
4278125 System for handling pattern devices in a molding plant for the production of mold halves in mold... Jul. 14, 1981
4278124 Method of producing hollow steel ingot and apparatus therefor Jul. 14, 1981
4278123 Simplified foundry core making machine and method Jul. 14, 1981
4278122 Traction device for a vehicle wheel Jul. 14, 1981
4278121 All-season pneumatic tire tread Jul. 14, 1981
4278120 Safety bolt Jul. 14, 1981
4278119 Storage means for removable tips for hand tool Jul. 14, 1981
4278118 Log splitter for garden tractors Jul. 14, 1981
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