| All Patents in class 409/170 |
Patents 1 -
10
of 63
      |
| Picture | Number | Date | Patentee | Title |
| | 527,213 | Oct. 09, 1894 | E.J. McClellan | Milling Machine |
| | 876,428 | Jan. 14, 1908 | J.G. Blessing | Fluid Pressure Operated Grinding Machine |
 | 956,208 | Apr. 26, 1910 | E.F. Smith | Grinding-machine |
| | 1,177,385 | Mar. 28, 1916 | C.M. Conradson | Hydraulic Variable Transmission |
| | 1,207,535 | Dec. 05, 1916 | F.E. Gardner | Disk grinder |
| | 1,740,744 | Dec. 24, 1929 | F.A. Parsons | Fluid Transmission and Control Means for Machine Tools |
| | 1,763,142 | Jun. 10, 1930 | W. Ernst | Hydraulic Press |
| | 1,794,472 | Mar. 03, 1931 | F.H. Mussler | Hydraulic Change-Speed-Gear Mechanism |
| | 1,800,982 | Apr. 14, 1931 | E.C. Bullard, F.H. Mussler | Hydraulic Change-Speed Gear Mechanism |
| | 1,832,694 | Nov. 17, 1931 | L.F. Nenninger, H. Ernst | Auxiliary Manual Means for Actuating Hydraulic Motors |
