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| All Patents in class 60/542 | |||||
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| Number | Date | Patentee | Title | Type | |
| 49,593 | Aug. 22, 1865 | H. Shattuck | Improved Atmospheric Hammer | power hammers | |
| 1,145,983 | Jul. 13, 1915 | J.B. French | Cushioning Piston for Power Hammers or the Like | ||