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| All Patents in class 474/222 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,798,381 | Jul. 09, 1957 | H.E. Siverson | Chain construction | other wood sawing machines | |
| RE24,475 | May 20, 1958 | H.E. Siverson | Chain construction | other wood sawing machines | |