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