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| All Patents in class 417/28 | |||||
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| Number | Date | Patentee | Title | Type | |
| 12,723 | Apr. 17, 1855 | D. Fowler | Machine for Punching Metal | stamping presses | |
| 2,378,883 | Jun. 19, 1945 | P.S. Russel | Control Device | liquid level controls | |