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| All Patents in class 81/442 | |||||
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| Number | Title | Classification(s) | |||
| 133,536 | Wrench | 81/442 | |||
| 141,794 | Wrenches | 81/442 | |||
| 148,629 | Bung-Bush Wrenches | 81/442 | |||
| 214,755 | Wrench For Inserting Bung-Bush | 81/442 | |||
| 218,106 | Bung-Bush Wrench | 81/442 | |||
| 257,414 | Wrench For Bung Bushes | 81/442 | |||
| 307,413 | Wrench | 81/442 | |||
| 972,604 | Wrench | 81/150, 81/442 | |||
| 1,872,392 | Wrench For Automobile Hub Caps | 7/100, 81/174, 81/186, 81/442, 81/461 | |||
| 2,890,733 | Screw-holding screw driver | 81/442 | |||