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| Patents for Geo. Gray | |||||
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| Number | Date | Patentee | Title | Type | |
| 148,057 | Mar. 03, 1874 | S. Henry | Improvement in Tool-Handles | combination tools | |
| 152,228 | Jun. 23, 1874 | S. Henry | Awl-Handles | tool holders | |
| 183,574 | Oct. 24, 1876 | T. Keenan | Improvement in Pipe-Wrenches | pipe wrenches | |
| 184,993 | Dec. 05, 1876 | D.C. Stillson | Wrench | pipe and nut combination wrenches | |