| All Patents in class 91/219 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 1,510,205 | Sep. 30, 1924 | J.T. Beaty | Cotton tamper | |
| 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 | grinding machines |
| 2,303,639 | Dec. 01, 1942 | R.D. Wortendyke, C. Herfurth | Grinding Machine | grinding machines |
| 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 | turret lathes |
