| All Patents in class 91/219 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 1,510,205 | Sep. 30, 1924 | J.T. Beaty | Cotton tamper |
| | 2,091,425 | Aug. 31, 1937 | W.H. Wood | Hydraulically operated machine tool |
| | 2,108,354 | Feb. 15, 1938 | F.A. Swanson | Blind end cylinder honing machine |
| | 2,254,010 | Aug. 26, 1941 | R.D. Wortendyke, C. Herfurth | Grinding Machine |
| | 2,303,639 | Dec. 01, 1942 | R.D. Wortendyke, C. Herfurth | Grinding Machine |
| | 2,496,756 | Feb. 07, 1950 | E.Y. Seborg | Control system for hydraulically driven machine tool elements |
 | 3,060,466 | Oct. 30, 1962 | A.G. Kozacka | Controls for turret lathes and the like |
