| All Patents in class 72/439 |
Patents 61 -
75
of 80
      |
| Number | Date | Patentee | Title | Type |
| 1,337,520 | Apr. 20, 1920 | P.E. Lane | Drop Hammer | drop hammers |
| 1,363,465 | Dec. 28, 1920 | A.B. Gardella | Board Drop Hammer | drop hammers |
| 1,388,671 | Aug. 23, 1921 | H. Terhune | Board Hammer | drop hammers |
| 1,393,073 | Oct. 11, 1921 | L.G. Bayrer | Drop Hammer | drop hammers |
| 1,393,501 | Oct. 11, 1921 | C.H. Franklin, O.R. Clark | Drop Hammer | drop hammers |
| 1,440,608 | Jan. 02, 1923 | H.E. Kleist, C.J. Kleist | Drop Hammer Board | drop hammers |
| 1,468,953 | Sep. 25, 1923 | J.R. Blakeslee | Drop Hammer | drop hammers |
| 1,606,717 | Nov. 09, 1926 | G.R. Murray | Drop hammer | drop hammers |
| 1,670,493 | May 22, 1928 | M.C. Talcott, G.C. Prime, R.S. Clark | Drop Hammer | drop hammers |
| 1,707,499 | Apr. 02, 1929 | M.C. Talcott | Drop Hammer | drop hammers |
| 1,798,309 | Mar. 31, 1931 | W.W. Criley | Four Roll Hammer | power hammers |
| 1,798,310 | Mar. 31, 1931 | W.W. cri | Board Hammer | power hammers |
| 1,833,800 | Nov. 24, 1931 | H. Terhune | Knock-off for board drop hammers and the like | drop hammers |
| 1,868,476 | Jul. 19, 1932 | F.J. Vlchek | Drop Hammer | drop hammers |
| 1,910,314 | May 23, 1933 | F.C. Billings | Drop Hammer | drop hammers |
