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| Patents for Hammond Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 646,565 | Apr. 03, 1900 | E. Wright | Pipe Wrench | pipe wrenches | |
| 791,263 | May 30, 1905 | F.A. Walden, R.A. Hammond | Wrench | quick adjust wrenches | |