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All Patents in class 254/348 | |||||
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Number | Date | Patentee | Title | Type | |
150,765 | May 12, 1874 | J. Knowlson, Jr. | Improvement in rope-drums for windlasses | hoists, winches, come-alongs | |
771,761 | Oct. 04, 1904 | T. Barrow | Power Hoist | hoists, winches, come-alongs |