| All Patents in class 100/231 |
Patents 1 -
10
of 10
      |
| Picture | Number | Date | Patentee | Title |
 | 110,455 | Dec. 27, 1870 | A. Hamlin | Improved power-press |
 | 219,555 | Sep. 09, 1879 | O.C. Woolson | Improvement in hydraulic-power machines |
| | 714,866 | Dec. 02, 1902 | F.H. Colvin | Arbor Press |
| | 719,242 | Jan. 27, 1903 | G.E. Martin | Riveting Machine |
 | 960,785 | Jun. 07, 1910 | A. Beaudry | Power-hammer |
 | 1,038,543 | Sep. 17, 1912 | G.T. Eames | Arbor press or ram |
 | 1,106,500 | Aug. 11, 1914 | G.T. Eames | Arbor press |
| | 1,275,688 | Aug. 13, 1918 | T.E. Holmes | Combined Steam Hammer and Forging Press |
| | D116,269 | Aug. 22, 1939 | S. Mandl | Arbor Press |
| | 4,007,679 | Feb. 15, 1977 | B.L. Edwards | Press and Safety Latch Therefor |
