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Patents for J. J. Walworth & Co. | |||||
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Number | Date | Patentee | Title | Type | |
22,157 | Nov. 30, 1858 | J.R. Brown | Pipe-Tongs | pipe tongs | |
42,560 | May 03, 1864 | J.C. Chapman | Ratchet Drill | ratchet drills | |
95,744 | Oct. 12, 1869 | D.C. Stillson | Improvement in Pipe-Wrenches | pipe wrenches | |
116,210 | Jun. 20, 1871 | E.S. Moulton | Improvement in Pipe-Cutters | pipe cutters |