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| All Patents in class 411/397 | |||||
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| Number | Date | Patentee | Title | Type | |
| 72,766 | Dec. 31, 1867 | F. Washbourne | Saw Bolt | saw nuts | |
| 260,743 | Jul. 11, 1882 | M. Campbell | Tap Wrench | tap wrenches and die stocks | |
| 303,385 | Aug. 12, 1884 | M.E. Campfield | Making Screws For Monkey Wrenches | wrench components | |
| 388,007 | Aug. 14, 1888 | P.A. Whitney | Clamp Screw | clamps | |