| Patents for Frank W. Curtis |
Patents 16 -
21
of 21
      |
| Number | Date | Patentee | Title | Type |
| 2,338,624 | Jan. 04, 1944 | F.W. Curtis | Elevating Mechanism for Machine Tool Knees | milling machines |
| 2,357,088 | Aug. 29, 1944 | F.W. Curtis | Cutting Tool | milling machine cutters |
| 2,361,995 | Nov. 07, 1944 | F.W. Curtis | Method of Making Metal Cutting Tools | milling machine cutters |
| 2,365,748 | Dec. 26, 1944 | F.W. Curtis | Hydraulic Circuit | milling machines |
| 2,381,648 | Aug. 07, 1945 | F.W. Curtis | Spark Gap | industrial machine mechanisms |
| 2,384,078 | Sep. 04, 1945 | F.W. Curtis | Throttle Valve for Machine Tool Control | milling machines |
