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Browse by Date |
| Patent Number |
Title Of Patent |
Date Issued |
| 4261453 |
Disengaging clutch |
Apr. 14, 1981 |
| 4261452 |
Overrunning clutch |
Apr. 14, 1981 |
| 4261451 |
Clutch drag controls for hoist drum |
Apr. 14, 1981 |
| 4261450 |
Failure detecting apparatus for a dual valve |
Apr. 14, 1981 |
| 4261449 |
Bicycle pedal actuated brake control and release system |
Apr. 14, 1981 |
| 4261448 |
Carrying and suspension system for soft luggage |
Apr. 14, 1981 |
| 4261447 |
Suitcase cart |
Apr. 14, 1981 |
| 4261446 |
Removable closure subassembly for a sealed strut |
Apr. 14, 1981 |
| 4261445 |
Crown brakes |
Apr. 14, 1981 |
| 4261444 |
Disc brake assembly |
Apr. 14, 1981 |
| 4261443 |
Disc brakes for vehicles |
Apr. 14, 1981 |
| 4261442 |
Diaphragm disc brake |
Apr. 14, 1981 |
| 4261441 |
Wind turbine damper |
Apr. 14, 1981 |
| 4261440 |
Automatically compensating object detection circuit |
Apr. 14, 1981 |
| 4261439 |
Elevator system |
Apr. 14, 1981 |
| 4261438 |
Lift truck mast having high visibility and extensibility |
Apr. 14, 1981 |
| 4261437 |
Spring operated pull cord re-wind mechanism for engine starters |
Apr. 14, 1981 |
| 4261436 |
Metal ladder and method of fabricating the same |
Apr. 14, 1981 |
| 4261435 |
Ladder tray |
Apr. 14, 1981 |
| 4261434 |
Fire escape device |
Apr. 14, 1981 |
| 4261433 |
Acoustical-reflective ceiling construction |
Apr. 14, 1981 |
| 4261432 |
Airline earphone structure |
Apr. 14, 1981 |
| 4261431 |
Control for effecting downshift during vehicle turning operations |
Apr. 14, 1981 |
| 4261430 |
Weighpan with three point support on two levers |
Apr. 14, 1981 |
| 4261429 |
Unitized weighing apparatus and method for making such an apparatus |
Apr. 14, 1981 |
| 4261428 |
Platform weighing apparatus |
Apr. 14, 1981 |
| 4261427 |
Long stroke jar bumper sub with safety sleeve |
Apr. 14, 1981 |
| 4261426 |
Reamer stabilizer |
Apr. 14, 1981 |
| 4261425 |
Mechanically nutating drill driven by orbiting mass oscillator |
Apr. 14, 1981 |
| 4261424 |
Peg and stake driver and extractor |
Apr. 14, 1981 |
| 4261423 |
Field cultivator shank |
Apr. 14, 1981 |
| 4261422 |
Method for treating underground formations |
Apr. 14, 1981 |
| 4261421 |
Method for selectively acidizing the less permeable zones of a high temperature subterranean for... |
Apr. 14, 1981 |
| 4261420 |
Enriched oil recovery using carbon dioxide |
Apr. 14, 1981 |
| 4261419 |
Underground recovery of natural gas from geopressured brines |
Apr. 14, 1981 |
| 4261418 |
Outdoor coil unit for heat pump |
Apr. 14, 1981 |
| 4261417 |
Device for preventing damage due to roof ice dams |
Apr. 14, 1981 |
| 4261416 |
Multimode cabin air conditioning system |
Apr. 14, 1981 |
| 4261415 |
Method and apparatus for cooling a pressure vessel |
Apr. 14, 1981 |
| 4261414 |
Die casting machine |
Apr. 14, 1981 |
| 4261413 |
Foundry molding system |
Apr. 14, 1981 |
| 4261412 |
Fine grain casting method |
Apr. 14, 1981 |
| 4261411 |
Sun shades for motor vehicles |
Apr. 14, 1981 |
| 4261410 |
Rollaway inside storm window |
Apr. 14, 1981 |
| 4261409 |
Bifold door fold-biased lift and locking apparatus |
Apr. 14, 1981 |
| 4261408 |
Traverse cord lock for vertical blind |
Apr. 14, 1981 |
| 4261407 |
Composition for treatment of racing tires and the treated tires |
Apr. 14, 1981 |
| 4261406 |
Expandable radial carcass spare tire |
Apr. 14, 1981 |
| 4261405 |
Safety pneumatic tire with tire maximum width to rim width ratio from 1.0 to 1.3 |
Apr. 14, 1981 |
| 4261404 |
Structurally continuous continuous snow chain |
Apr. 14, 1981 |
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