| All Patents in class 451/25 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
| | 2,012,065 | Aug. 20, 1935 | R.L. Goetzel, F.S. Haas | Grinding Machine |
| | 2,033,449 | Mar. 10, 1936 | E.G. Roehm, M. Romaine | Machine Tool Mechanism |
| | 2,209,562 | Jul. 30, 1940 | J.C. Drader | Worm Element Lapping Machine |
 | 2,372,427 | Mar. 27, 1945 | C. Johnson | Machine tool control |
| | 2,537,389 | Jan. 09, 1951 | J. Decker, A.F. Alt | Grinding Machine |
 | 2,631,414 | Mar. 17, 1953 | A.A. Muehling | Honing tool with gauge |
| | 2,777,257 | Jan. 15, 1957 | A.M. Johnson | Hone with pressure actuated gage |
 | 2,793,479 | May 28, 1957 | P.C. Durland, M.H. Arms | Internal grinding machine |
| | 2,795,088 | Jun. 11, 1957 | R. Bernhard, C.J. Schonhoft | Microcentric Grinder |
| | 2,969,623 | Jan. 31, 1961 | A.H. Faulhaber, K.D. Mehlhope | Size Gauging Device |
