| All Patents in class 91/519 |
Patents 1 -
10
of 15
      |
| Picture | Number | Date | Patentee | Title |
| | 681,873 | Sep. 03, 1901 | C.J. Carney, J.C. Gorton | Riveting Machine |
| | 1,275,688 | Aug. 13, 1918 | T.E. Holmes | Combined Steam Hammer and Forging Press |
| | 1,653,350 | Dec. 20, 1927 | W. Ernst | High Speed Hydraulic Press |
 | 1,687,369 | Oct. 09, 1928 | F.J. Lapointe | Hydraulic broaching machine |
| | 1,895,710 | Jan. 31, 1933 | H.F. MacMillin, W. Ernst | Hydraulic Press |
| | 1,905,224 | Apr. 25, 1933 | C. Booth, F.S. Haas | Grinding Machinery |
| | 2,056,908 | Oct. 06, 1936 | L.L. Schauer | Multiple hydraulic rotor drive for drill spindles |
| | 2,056,910 | Oct. 06, 1936 | L.L. Schauer | Hydraulic motor unit |
 | 2,058,377 | Oct. 20, 1936 | H.G. Francis | Hydraulic press control |
| | 2,152,837 | Apr. 04, 1939 | E. Cannon | Prefill valve for hydraulic presses |
