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| All Patents in class 384/249 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,072 | Jun. 29, 1852 | G. Hotchkiss | Hanging steps of mill-spindles | ||
| 308,639 | Dec. 02, 1884 | H.L. Stevens | Lathe Mandrel | mandrels and arbors | |
| 389,480 | Sep. 11, 1888 | J. Massett | Expanding Mandrel | mandrels and arbors | |
| 979,589 | Dec. 27, 1910 | R. Stockbridge | Variable-speed driving mechanism | metal shapers | |
| 1,537,880 | May 12, 1925 | J.S. Reid | Saw Mill Carriage | sawmill carriages | |