| Patents for Frank W. Curtis |
Patents 1 -
10
of 21
      |
| Picture | Number | Date | Patentee | Title |
| | 1,865,617 | Jul. 05, 1932 | F.W. Curtis | Metal Cutting Tool |
| | 1,917,504 | Jul. 11, 1933 | F.W. Curtis | Cutter Grinder |
 | 2,118,967 | May 31, 1938 | F.W. Curtis | Cutter grinder |
| | 2,141,263 | Dec. 27, 1938 | F.W. Curtis | Indexing Work Holder |
| | 2,230,716 | Feb. 04, 1941 | F.W. Curtis | Table Drive for Milling Machines |
| | 2,281,921 | May 05, 1942 | F.W. Curtis | Tumble Change Gear Mechanism |
| | 2,289,874 | Jul. 14, 1942 | F.W. Curtis | Milling Machine |
 | 2,301,525 | Nov. 10, 1942 | F.W. Curtis | Milling Machine |
| | 2,302,744 | Nov. 24, 1942 | F.W. Curtis | Spindle Control for Machine Tools |
| | 2,304,779 | Dec. 15, 1942 | F.W. Curtis | Toolhead Unit |
