| All Patents in class 173/122 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 39,924 | Sep. 15, 1863 | B. Hotchkiss | Improved Atmosheric Trip-Hammer | steam hammers |
| 58,880 | Oct. 16, 1866 | J.P. Noyes | Drop Hammer | drop hammers |
| 639,538 | Dec. 19, 1899 | H.G. Dittbenner | Power-hammer | drop hammers |
| 716,019 | Dec. 16, 1902 | H. Feldhus | Power Hammer | trip and helve hammers |
| 973,216 | Oct. 18, 1910 | G.H. Rowe | Electromechanical device | impact riveters |
| 1,052,823 | Feb. 11, 1913 | A.M. Irvine | Power Actuated Hand Tool | riveting tools |
| 2,519,477 | Aug. 22, 1950 | F.H. Kind | Power Hammer | power hammers |
