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| Patents for J. H. Hubbard | |||||
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| Number | Date | Patentee | Title | Type | |
| 255,470 | Mar. 28, 1882 | J. Spickerman | Watch Maker's Chuck | metal lathe chucks | |
| 695,559 | Mar. 18, 1902 | W. Jackmond | Reamer | tapered reamers | |