| All Patents in class 72/453.18 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 10,923 | May 16, 1854 | B. Hughes | Trip-Hammer | trip and helve hammers |
| 35,309 | May 20, 1862 | W.D. Grimshaw | Power Hammer | power hammers |
| 178,966 | Jun. 20, 1876 | G.H. Sellers | Machines for Welding, Upsetting and Shaping Iron | |
| 424,939 | Apr. 01, 1890 | F.W. Taylor | Power-hammer | power hammers |
| 787,339 | Apr. 11, 1905 | R.F. Massa | Attachment for Drop Hammers | drop hammers |
| 788,876 | May 02, 1905 | J. Bêché | Pneumatic hammer | drop hammers |
| 821,303 | May 22, 1906 | E.W. Merrill, Jr. | Drop Hammer | drop hammers |
| 942,756 | Dec. 07, 1909 | W. Norris, T. Scott-King | Power Hammer | power hammers |
| 1,084,707 | Jan. 20, 1914 | J. Nazel, R.E. Bates | Fluid-power hammer | drop hammers |
| 1,268,231 | Jun. 04, 1918 | E.J. Fritsch, R.W. Nazel | Fluid-power hammer | drop hammers |
| 1,268,270 | Jun. 04, 1918 | R.W. Nazel | Fluid-power hammer | drop hammers |
| 1,275,688 | Aug. 13, 1918 | T.E. Holmes | Combined Steam Hammer and Forging Press | steam hammers |
| 1,429,421 | Sep. 19, 1922 | E.J. Fritsch, R.W. Nazel | Fluid-power hammer | drop hammers |
| 1,793,206 | Feb. 17, 1931 | R.E. Bates | Pneumatic power hammer | power hammers |
| 1,990,478 | Feb. 12, 1935 | R.P. Fitzgerald | Drop hammer | drop hammers |
