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| All Patents in class 474/140 | |||||
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| Number | Date | Patentee | Title | Type | |
| 747,563 | Dec. 22, 1903 | P. Mullen | Chain-guard | hoists, winches, come-alongs | |
| 2,599,608 | Jun. 10, 1952 | N.C. Bye | Guide Bar for Chain Saws | handheld chainsaws | |