| All Patents in class 451/143 |
Patents 61 -
74
of 74
      |
| Number | Date | Patentee | Title | Type |
| 2,208,879 | Jul. 23, 1940 | J.Y. Blazek, V.R. Roy | Grinder for clutch pressure-plates | clutch maintenance |
| 2,332,421 | Oct. 19, 1943 | E. Wildhaber | Method And Machine For Relieving Cutters | metal relieving machines |
| 2,368,315 | Jan. 30, 1945 | E.D. Vancil, L.E. Mehlhope | Grinding Machine | cylindrical grinders |
| 2,410,038 | Oct. 29, 1946 | M.H. Arms, L.J. Barnard | Grinding machines | grinders |
| 2,456,060 | Dec. 14, 1948 | J.H. Hoern, C.G. Pardee | Rotor Grinder | cylindrical grinders |
| 2,503,674 | Apr. 11, 1950 | T.H. Ljunggren | Grinding machine drive | grinders |
| 2,585,533 | Feb. 12, 1952 | W.J. Bryant, T.H. Ljunggren, W.F. Moore | Internal grinding machine with automatic air gauge sizing | cylindrical grinders |
| 2,590,151 | Mar. 25, 1952 | W.J. Bryant, H.H. Gates, T.H. Ljunggren | Bore gauge head | grinding attachments |
| 2,834,160 | May 13, 1958 | G.E. Lillie | Grinding machine | grinders |
| 2,840,956 | Jul. 01, 1958 | C.M. Grinage | Grinding Machine | |
| 2,952,949 | Sep. 20, 1960 | P. Maker | Grinding machine | grinders |
| 2,962,840 | Dec. 06, 1960 | C.H. Werth | Grinding apparatus | grinders |
| 3,003,291 | Oct. 10, 1961 | A.D. Stuckey | Mechanism for Shoulder Grinding | grinding machines |
| 3,043,056 | Jul. 10, 1962 | A.D. Stuckey, J. Decker | Machine Tool Construction to Eliminate Effect of Expansion of Members | metalworking machine mechanisms |
