| All Patents in class 74/568R |
Patents 16 -
30
of 34
      |
| Number | Date | Patentee | Title | Type |
| 1,980,336 | Nov. 13, 1934 | F.O. Hoagland | Chuck Retaining Means | metal lathe chucks |
| 2,006,879 | Jul. 02, 1935 | E. Benedek | Pump | hydraulic pumps |
| 2,010,378 | Aug. 06, 1935 | B. Sassen | Hydraulic Power Unit | hydraulic apparatus |
| 2,180,802 | Nov. 21, 1939 | E.J. Dillman | Control Device | thermostats |
| 2,216,308 | Oct. 01, 1940 | E.C. Ballman | Method and Means for Balancing Grinding Wheels | wheel truing devices |
| 2,239,146 | Apr. 22, 1941 | J.E. Fleury, E.J. Dillman | Control Device | flow controls |
| 2,282,038 | May 05, 1942 | G. Davenport | Variable Trimmer Cam | grinder dressers |
| 2,363,812 | Nov. 28, 1944 | J.L. Skinner | Engine Control Mechanism | steam engine governors |
| 2,388,994 | Nov. 13, 1945 | R.E. Phelon | Centrifugal spark control mechanism for flywheel magnetos | ignition systems |
| 2,413,436 | Dec. 31, 1946 | O.W. Dawson | Grinding Machine | tool grinders |
| 2,493,420 | Jan. 03, 1950 | R.W. Brown, H.H. Ranney | Cam Mechanism for Variable Length Throw | metalworking machine mechanisms |
| 2,497,302 | Feb. 14, 1950 | F.A. Fritzsch | Automatic Lathe Control | automatic lathes |
| 2,607,234 | Aug. 19, 1952 | E.L. McFerren | Control Mechanism for Machine Tools | machine tool controls |
| 2,709,924 | Jun. 07, 1955 | X.F. Castelli | Adjusting Mechanism for Machine Tools | metalworking machine mechanisms |
| 2,767,598 | Oct. 23, 1956 | F.G. Burg | Speed control system for machine tools | drill presses |
