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| All Patents in class 74/145 | |||||
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| Number | Date | Patentee | Title | Type | |
| 241,236 | May 10, 1881 | F.A. Pratt | Adjustable lever | cranes | |
| 614,470 | Nov. 22, 1898 | G.H. Hasey | Pawl-and-ratchet device | industrial machine mechanisms | |
| 1,798,481 | Mar. 31, 1931 | N.F. McNaught, E.H. Peterson | Ratchet lever | ratchet wrenches | |
| 1,798,482 | Mar. 31, 1931 | N.F. McNaught, E.H. Peterson | Ratchet lever | ||