| Patents for P. Lowentraut Manufacturing Co. |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 198,685 | Dec. 25, 1877 | S.E. Robinson | Improvement in wrenches | brace wrenches |
| 226,490 | Apr. 13, 1880 | J.W. Calef | Wrench | self-adjust wrenches |
| 273,461 | Mar. 06, 1883 | J.W. Calef | Improved Self-Adjusting Wrench | self-adjust wrenches |
| 296,540 | Apr. 08, 1884 | D.M. De Silva | EUREKA ALLIGATOR PIPE TONG OR WRENCH | pipe wrenches |
| CA-20,659 | Nov. 29, 1884 | D.M. De Silva | Wrench | alligator wrenches |
| 530,419 | Dec. 04, 1894 | S.J. Johnston | Combination tool | brace wrenches |
| 601,302 | Mar. 29, 1898 | S.J. Johnston | Combination-tool | brace wrenches |
| 674,735 | May 21, 1901 | S.J. Johnston | Combination tool (brace wrench) | brace wrenches |
