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| Patents for Robert S. Carr | |||||
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| Number | Date | Patentee | Title | Type | |
| 333,108 | Dec. 29, 1885 | R.S. Carr | Wrench | quick adjust wrenches | |
| 516,473 | Mar. 13, 1894 | R.S. Carr | Saw-Handle | crosscut saw handles | |
| 641,182 | Jan. 09, 1900 | F.J. Becker | Can Clamp | jar wrenches | |
| 684,433 | Oct. 15, 1901 | H.R. Isler | Differential Speed Mechanism | metal lathes | |