| All Patents in class 451/1 |
Patents 16 -
30
of 55
      |
| Number | Date | Patentee | Title | Type |
| 2,033,449 | Mar. 10, 1936 | E.G. Roehm, M. Romaine | Machine Tool Mechanism | grinding machines |
| 2,036,658 | Apr. 07, 1936 | B.F. Stowell | Automatic grinding machine | grinders |
| 2,042,257 | May 26, 1936 | C.W. Hopkins, R.E. Harrison | Machine Tool | grinding machines |
| 2,048,467 | Jul. 21, 1936 | E.G. Roehm | Grinding Machine | grinding machines |
| 2,106,217 | Jan. 25, 1938 | A.M. Johnson | Machine tool | |
| 2,141,853 | Dec. 27, 1938 | C.E. Brown | Grinding Machine | grinding machines |
| 2,143,533 | Jan. 10, 1939 | C.E. Brown, W.D. Archea | Machine Tool | grinding machines |
| 2,149,409 | Mar. 07, 1939 | F.D. Van Norman, B.F. Stowell, R.S. Pyne | Oscillating grinder | grinders |
| 2,167,948 | Aug. 01, 1939 | K.T. Schledorn, C. Herfurth | Cambering Mechanism for Grinding Machines | grinding machines |
| 2,403,546 | Jul. 09, 1946 | J.O. Olsen | Method and apparatus for honing | honing machines |
| 2,475,326 | Jul. 05, 1949 | C. Johnson | Control system | milling machine accessories |
| 2,491,398 | Dec. 13, 1949 | W.L. Tancred | Contouring Machine | profile and contour grinders |
| 2,518,600 | Aug. 15, 1950 | W.A. Cox | Infeed Attachment for Grinding Machines | centerless grinders |
| 2,540,774 | Feb. 06, 1951 | R.O. Beardsley | Holding Fixture | jigs and fixtures |
| 2,641,873 | Jun. 16, 1953 | F.S. Haas | Automatic Truing Mechanism | grinder dressers |
