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| All Patents in class 403/250 | |||||
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| Number | Date | Patentee | Title | Type | |
| 364,238 | Jun. 07, 1887 | G.W. Francis | Wedge for Axes or Other Tools | axes | |
| 1,399,172 | Dec. 06, 1921 | A. Vaughan | Tool handle holding means | ||