| Patents for Frederick S. Haas |
Patents 31 -
45
of 50
      |
| Number | Date | Patentee | Title | Type |
| 2,020,547 | Nov. 12, 1935 | F.S. Haas | Grinding Machine | grinding machines |
| 2,025,885 | Dec. 31, 1935 | F.S. Haas, L.F. Nenninger | Grinding Machine | grinding machines |
| 2,033,335 | Mar. 10, 1936 | B.A. Kearns, F.S. Haas | Grinding Machine | grinding machines |
| 2,033,406 | Mar. 10, 1936 | F.S. Haas, E.D. Vancil | Machine Tool Organization | grinding machines |
| 2,040,990 | May 19, 1936 | R.L. Goetzel, F.S. Haas | Hydraulic Control Mechanism | grinding machines |
| 2,045,737 | Jun. 30, 1936 | F.S. Haas, E.D. Vancil | Machine Tool | grinding machines |
| 2,072,814 | Mar. 02, 1937 | F.S. Haas | Grinding Machinery | grinding machines |
| 2,141,065 | Dec. 20, 1938 | W. Trible, F.S. Haas | Grinding Machine | grinding machines |
| 2,147,893 | Feb. 21, 1939 | F.S. Haas | Grinding Machine | grinding machines |
| 2,161,465 | Jun. 06, 1939 | F.S. Haas | Grinding Machine | grinding machines |
| 2,163,836 | Jun. 27, 1939 | F.S. Haas | Backlash-Eliminating Mechanism for Machine Tools | grinding machines |
| 2,164,888 | Jul. 04, 1939 | F.S. Haas, H. Ernst, B. Sassen | Variable Delivery Pump | grinding machines |
| 2,171,208 | Aug. 29, 1939 | F.S. Haas, A.H. Dall | High Speed Spindle Construction | grinding machines |
| 2,199,457 | May 07, 1940 | F.S. Haas | Centerless Grinder | grinding machines |
| 2,272,048 | Feb. 03, 1942 | F.S. Haas | Headstock | grinding machines |
