| All Patents in class 451/52 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 1,708,491 | Apr. 09, 1929 | C.R. Alden | Method of finishing ball bearings | industrial machine bearings |
| 1,779,467 | Oct. 28, 1930 | S. Einstein | Process of Grinding | grinding machines |
| 1,880,347 | Oct. 04, 1932 | K.L. Herrmann | Method of Grinding Bearing Races | grinders |
| 2,036,658 | Apr. 07, 1936 | B.F. Stowell | Automatic grinding machine | grinders |
| 2,460,472 | Feb. 01, 1949 | H.N. Seyferth | Process for improving the surface of form ground races | industrial machine bearings |
| 2,652,663 | Sep. 22, 1953 | E.C. Taylor | Method and apparatus for compensating for grinding wheel wear | grinders |
| 3,386,317 | Jun. 04, 1968 | R.C. Greathouse, C.N. Flick | Bore Machining Mechanism | horizontal boring mills |
| 3,977,126 | Aug. 31, 1976 | F.A. Hohler, E.E. Woldyka | Grinding Machine | profile and contour grinders |
