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All Patents in class 72/411 | |||||
Number | Date | Patentee | Title | Type | |
135,406 | Feb. 04, 1873 | L. Chapman | Improvement in Dies for Making Wrench-Heads | tool making machines | |
659,626 | Oct. 09, 1900 | H.C. Pomeroy | Riveting-Machine | riveters |