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Browse by Date |
| 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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