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| All Patents in class 72/442 | |||||
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| Number | Date | Patentee | Title | Type | |
| 788,547 | May 02, 1905 | A.G. Anderson, O.P. Miklebost | Power Hammer | power hammers | |
| 1,113,442 | Oct. 13, 1914 | L.A. Irvin | Punching and Riveting Machine | metal punching machines | |