| All Patents in class 72/444 |
Patents 1 -
10
of 37
      |
| Picture | Number | Date | Patentee | Title |
| | 17,411 | May 26, 1857 | M. Peck | Drop-Press |
| | 17,634 | Jun. 23, 1857 | H. Pierce | Machine for Straightening Knife-Blades |
| | 27,804 | Apr. 10, 1860 | D. Howell | Trip-Hammer |
| | 74,868 | Feb. 25, 1868 | C. Vogel | Trip Hammer |
| | 78,291 | May 26, 1868 | T.P. Keeler | Drop Hammer |
 | 160,483 | Mar. 02, 1875 | N.C. Stiles | Drop Hammer |
| | 265,655 | Oct. 10, 1882 | W.T. Browne | Rotary Hammer |
| | 333,486 | Dec. 29, 1885 | H. St. Lawrence | Forging Machine |
 | 350,007 | Sep. 28, 1886 | F.M. Leavitt | Drop-hammer |
| | 402,526 | Apr. 30, 1889 | H.B. Hughes | Gold Beater's Hammer |
