| All Patents in class 451/237 |
Patents 61 -
72
of 72
      |
| Number | Date | Patentee | Title | Type |
| 2,425,859 | Aug. 19, 1947 | O.M. Braaten | Cutter Grinder | tool grinders |
| 2,457,383 | Dec. 28, 1948 | F.G. Krafft | Apparatus for grinding | grinders |
| 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 |
| 2,652,664 | Sep. 22, 1953 | F.C. Savage, J.A. Allan | Operator-controlled Grinding Machine With Optical Comparator | profile and contour grinders |
| 2,696,066 | Dec. 07, 1954 | E.G. Roehm | Grinding Machine | profile and contour grinders |
| 2,725,050 | Nov. 29, 1955 | H.S. Jakobsen | Grinding Wheel Dressers | grinder dressers |
| 2,938,312 | May 31, 1960 | A.W. Mall | Method of fabricating chain saw guide bars | handheld chainsaws |
| 3,009,294 | Nov. 21, 1961 | T.J. Lindem, J. van Roojen | Grinder with wheel dresser | tool grinders |
| 3,106,046 | Oct. 08, 1963 | A.H. Dall | Contour Tracing Apparatus | profiling machines |
| 3,109,263 | Nov. 05, 1963 | A.D. Stuckey | Precision Grinding Machine | centerless grinders |
| 3,713,254 | Jan. 30, 1973 | L.H. Cheever, T.V. Williams | Controlled Tool for Machining Compound Surfaces | cutter grinding machines |
