| All Patents in class 72/444 |
Patents 1 -
15
of 37
      |
| Number | Date | Patentee | Title | Type |
| 17,411 | May 26, 1857 | M. Peck | Drop-Press | drop hammers |
| 17,634 | Jun. 23, 1857 | H. Pierce | Machine for Straightening Knife-Blades | forging dies |
| 27,804 | Apr. 10, 1860 | D. Howell | Trip-Hammer | trip and helve hammers |
| 74,868 | Feb. 25, 1868 | C. Vogel | Trip Hammer | trip and helve hammers |
| 78,291 | May 26, 1868 | T.P. Keeler | Drop Hammer | drop hammers |
| 160,483 | Mar. 02, 1875 | N.C. Stiles | Drop Hammer | drop hammers |
| 265,655 | Oct. 10, 1882 | W.T. Browne | Rotary Hammer | rotary hammers |
| 333,486 | Dec. 29, 1885 | H. St. Lawrence | Forging Machine | forging presses |
| 350,007 | Sep. 28, 1886 | F.M. Leavitt | Drop-hammer | drop hammers |
| 402,526 | Apr. 30, 1889 | H.B. Hughes | Gold Beater's Hammer | jeweler |
| 550,581 | Dec. 03, 1895 | W.H. Botting | Power Hammer | power hammers |
| 576,273 | Feb. 02, 1897 | F. Lombard | Drop Hammer | drop hammers |
| 609,836 | Aug. 30, 1898 | G. Rowbottom | Drop Hammer | drop hammers |
| 639,538 | Dec. 19, 1899 | H.G. Dittbenner | Power-hammer | drop hammers |
| 706,151 | Aug. 05, 1902 | W. Bauermeister | Power Hammer | power hammers |
