| All Patents in class 451/221 |
Patents 61 -
68
of 68
      |
| Number | Date | Patentee | Title | Type |
| 2,622,376 | Dec. 23, 1952 | A.H. Dall | Grinding Machine | grinding machines |
| 2,641,876 | Jun. 16, 1953 | J. Decker, B.A. Kearns | Precision Grinding Machine | cylindrical grinders |
| 2,652,664 | Sep. 22, 1953 | F.C. Savage, J.A. Allan | Operator-controlled Grinding Machine With Optical Comparator | profile and contour grinders |
| 2,727,339 | Dec. 20, 1955 | R.M. Anderson, R.S. Pyne | Grinding wheel feed for grinding machines | cylindrical grinders |
| 2,802,312 | Aug. 13, 1957 | G.L. Grove, E. Gosney, Jr. | Grinding Machine | cylindrical grinders |
| 3,056,240 | Oct. 02, 1962 | R.G. Wise, J.M. Morgan, Jr. | Automatic Grinding Machine | cylindrical grinders |
| 3,367,069 | Feb. 06, 1968 | G. Mickas | Form Wheel Gear Grinder | gear grinding machines |
| 3,902,278 | Sep. 02, 1975 | R.E. Crossman, H.R. Uhtenwoldt | Grinding Machine for Generating an Epitrochoidal Surface | profile and contour grinders |
