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| Patents for Matthew C. Gay | |||||
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| Number | Date | Patentee | Title | Type | |
| 551,311 | Dec. 10, 1895 | J. Heard, M.C. Gay | Wrench | self-adjust wrenches | |
| 616,414 | Dec. 20, 1898 | M.C. Gay | Wrench | wrench jaw components | |