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| All Patents in class 212/89 | |||||
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| Number | Date | Patentee | Title | Type | |
| 810,445 | Jan. 23, 1906 | C.W. Tribken | Hoisting apparatus | sawmill log handling | |
| 878,482 | Feb. 04, 1908 | J.H. Dickinson, T.S. Miller | Hoisting and conveying device | hoists, winches, come-alongs | |