| All Patents in class 451/239 |
Patents 46 -
52
of 52
      |
| Number | Date | Patentee | Title | Type |
| 2,730,843 | Jan. 17, 1956 | H. Ernst | Cambering Mechanism | roll grinding machines |
| 2,752,740 | Jul. 03, 1956 | G.H. Mouw | Form relieving fixture | sharpening tools and fixtures |
| 2,764,855 | Oct. 02, 1956 | O.W. Dawson | Fixture for positioning tool relative to grinding head | cutter grinding machines |
| 2,768,478 | Oct. 30, 1956 | C.E. Waller | Pattern Controlled Cutter Grinder | tool grinders |
| 2,963,831 | Dec. 13, 1960 | G.J. Voelz | Sanding machine | belt sanders |
| 3,538,649 | Nov. 10, 1970 | T.V. Williams | Apparatus for Sharpening Multiedge Tools | cutter 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 |
