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| Patents for John W. Gray | |||||
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| Number | Date | Patentee | Title | Type | |
| 571,267 | Nov. 10, 1896 | J.W. Gray | Bit-stock | eggbeater drills | |
| 954,977 | Apr. 12, 1910 | J.W. Lambert | Friction driving mechanism | motor vehicle gearing | |