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| All Patents in class 279/2.13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 79,198 | Jun. 23, 1868 | J. Brewer | Expanding Tap | ||
| 291,282 | Jan. 01, 1884 | W.H. Blue | Lathe Mandrel | mandrels and arbors | |
| 662,835 | Nov. 27, 1900 | W.R. Thomas, J. Thomas | Mandrel | mandrels and arbors | |