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| All Patents in class 464/170 | |||||
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| Number | Date | Patentee | Title | Type | |
| 712,725 | Nov. 04, 1902 | J.H. Rusby | Knuckle-joint | ||
| 1,246,185 | Nov. 13, 1917 | H. Terhune | Means for operating the rolls of a board drop-hammer | drop hammers | |