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| All Patents in class 219/137R | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,604,181 | Oct. 26, 1926 | J.F. Lincoln | Arc Welding | welding machines | |
| 2,827,552 | Mar. 18, 1958 | V. Berthelsen | Platen construction method | veneer machines | |