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| All Patents in class 72/435 | |||||
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| Number | Date | Patentee | Title | Type | |
| 52,894 | Feb. 27, 1866 | T. Shaw | Power Hammer | power hammers | |
| 323,616 | Aug. 04, 1885 | J. Wilson | Rod Pointing Hammer | power hammers | |
| 1,531,489 | Mar. 31, 1925 | J.R. Bowie, G.P. Macready | Pneumatic drop hammer | drop hammers | |