| All Patents in class 72/456 |
Patents 16 -
30
of 45
      |
| Number | Date | Patentee | Title | Type |
| 507,239 | Oct. 24, 1893 | C.H. Norton | Riveting Machine | riveting machines |
| 509,897 | Dec. 05, 1893 | T. Murphy, W.P. Hatch | Drop Hammer | drop hammers |
| 545,763 | Sep. 03, 1895 | A. Beaudry | Power Hammer | power hammers |
| 562,231 | Jun. 16, 1896 | F.B. Miles | Steam Hammer | steam hammers |
| 624,101 | May 02, 1899 | D.C. Griggs, G. Rowbottom | Drop Hammer | drop hammers |
| 642,289 | Jan. 30, 1900 | F.C. Billings | Metal Working Machine | drop hammers |
| 716,019 | Dec. 16, 1902 | H. Feldhus | Power Hammer | trip and helve hammers |
| 798,751 | Sep. 05, 1905 | P.E. Skillin | Tool Guide and Holder | tool holders |
| 855,151 | May 28, 1907 | F.I. Matthews, L. Wilson | Power Hammer | power hammers |
| 882,588 | Mar. 24, 1908 | W.T. Sears | Drop Hammer | drop hammers |
| 893,561 | Jul. 14, 1908 | A.A. Ambler | Drop Hammer | drop hammers |
| 915,012 | Mar. 09, 1909 | L.G. Bayrer | Drop Press and Attachment Therefor | stamping presses |
| 937,938 | Oct. 26, 1909 | F. Holmgren | Drop Hammer or the Like | drop hammers |
| 973,620 | Oct. 25, 1910 | F.E. Sutherland, J.A. Brown | Power Hammer | power hammers |
| 999,662 | Aug. 01, 1911 | A.C. Creter, F.E. Lane | Steam Hammer | steam hammers |
