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| All Patents in class 81/57.36 | |||||
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| Number | Date | Patentee | Title | Type | |
| 439,388 | Oct. 28, 1890 | E.S. Cushman | Wrench | axle nut wrenches | |
| 1,141,864 | Jun. 01, 1915 | P.J. Boucher | Tool Holder | tool holders | |
| 2,807,972 | Oct. 01, 1957 | W.G. Mitchell | Multiple unit assembly for rotary tools | ||