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| All Patents in class 83/146 | |||||
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| Number | Date | Patentee | Title | Type | |
| 421,895 | Feb. 25, 1890 | A. Beaudry | Machine for punching and shearing metal | metal punching machines | |
| 1,423,917 | Jul. 25, 1922 | S. Diamant | Punch and Die Set | metal punches | |
| 1,958,705 | May 15, 1934 | W.F. Klein | Apparatus for Thin Wall Broaching | ||