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| All Patents in class 254/301 | |||||
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| Number | Date | Patentee | Title | Type | |
| 652,798 | Jul. 03, 1900 | S. Mattson | Winch-head | hoists, winches, come-alongs | |
| 819,226 | May 01, 1906 | C.O. Heggem | Traction Engine | steam traction engines | |