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| Patents for John Grannis | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,728X | May 12, 1812 | J. Grannis | Horse mills using weights | ||
| 558,874 | Apr. 21, 1896 | J. Grannis | Axle Nut Wrench | axle nut wrenches | |