| All Patents in class 74/582 |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
| | 66,222 | Jul. 02, 1867 | A. Cunningham, A. Sharp | Power Hammer |
| | 115,600 | Jun. 06, 1871 | J.S. Crane, J.T. Gilmore | Improvement in Machines for Dressing Millstones |
 | 264,816 | Sep. 19, 1882 | A. Beaudry | Power-hammer |
 | 285,389 | Sep. 25, 1883 | J.C. Butterfield | Atmospheric hammer |
| | 407,688 | Jul. 23, 1889 | A. Renetzky | Drill |
| | 616,059 | Dec. 13, 1898 | F. Hamilton, J. Madlehner | Explosive Gas Engine |
| | 624,555 | May 09, 1899 | H. Smith | Explosive Engine |
 | 665,249 | Jan. 01, 1901 | L. Mayer | Trip-hammer ram connection |
| | 774,791 | Nov. 15, 1904 | J.D. Seibert | Power Hammer |
 | 778,889 | Jan. 03, 1905 | A.D. Plowden | Automatic take-up |
