| Patents for Duro Metal Products Co. |
Patents 1 -
15
of 92
      |
| Number | Title | Classification(s) |
| 1,744,413 | Socket-wrench tool | 29/437, 74/545, 81/177.1 |
| 1,749,300 | Valve grinder | 451/117 |
| 1,751,657 | Operating mechanism for valve grinders | 74/320 |
| 1,788,535 | Socket-wrench kit | 206/375 |
| 1,798,481 | Ratchet lever | 74/145, 81/58.5 |
| 1,798,482 | Ratchet lever | 74/145, 81/58.5 |
| 1,799,462 | Spare-tire lock | 70/230, 70/260 |
| 1,825,007 | Valve seat reconstruction tool | 408/83.5, 76/115, 76/3, 76/DIG.003 |
| 1,851,313 | Spare tire lock | 70/19, 70/230, 70/260 |
| 1,854,137 | Spare wheel or tire lock | 224/42.25, 70/173, 70/259, 70/260 |
| 1,857,211 | Wheel puller | 29/257, 29/263 |
| 1,858,372 | Valve spring compressor | 29/215, 29/267 |
| 1,868,839 | Ratchet lever | 81/63 |
| 1,868,840 | Ratchet lever | 74/156, 81/61, D08/25 |
| 1,872,493 | Brake lining tool | 408/706, 408/82, 408/99 |
