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| All Patents in class 72/455 | |||||
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| Number | Date | Patentee | Title | Type | |
| 27,925 | Apr. 17, 1860 | M. Peck | Atmospheric Hammer | trip and helve hammers | |
| 434,960 | Aug. 26, 1890 | E.E. Stow | Tinsmith's Machine | sheet metal forming rolls | |
| 1,246,184 | Nov. 13, 1917 | H. Terhune | Drop-hammer | drop hammers | |
| 1,807,455 | May 26, 1931 | H. Terhune | Forging hammer | drop hammers | |
| 2,875,652 | Mar. 03, 1959 | W.A. Ehlert | Vertically Divided Forging Press Frame | forging presses | |