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| All Patents in class 254/330 | |||||
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| Number | Date | Patentee | Title | Type | |
| 452,592 | May 19, 1891 | J. Beckner | Traction Engine | steam traction engines | |
| 787,609 | Apr. 18, 1905 | W.A. Barker | Hoisting-machine | hoists, winches, come-alongs | |
| 1,141,679 | Jun. 01, 1915 | W.A. Barker | Electrically-driven hoist | hoists, winches, come-alongs | |