| All Patents in class 451/218 |
Patents 31 -
41
of 41
      |
| Number | Date | Patentee | Title | Type |
| 2,142,022 | Dec. 27, 1938 | R.D. Wortendyke, H. Ernst | Infeed Cycle Control Attachment | grinding machines |
| 2,294,265 | Aug. 25, 1942 | R.D. Wortendyke, A.J. Graf | Automatic Infeeding Mechanism for Grinding Machines | grinding machines |
| 2,303,639 | Dec. 01, 1942 | R.D. Wortendyke, C. Herfurth | Grinding Machine | grinding machines |
| 2,377,982 | Jun. 12, 1945 | J. Decker, G.W. Binns, F.J. Theler | Grinding Machine and Method of Grinding | centerless grinders |
| 2,392,651 | Jan. 08, 1946 | L.M. Davis | Work Supporting and Moving Mechanism | metalworking machine mechanisms |
| 2,459,233 | Jan. 18, 1949 | A.W. Mall | Saw sharpener | sharpening machines |
| 2,778,170 | Jan. 22, 1957 | E.V. Flanders | Method of Grinding, Including Grinding Wheel Forming | grinder dressers |
| 2,902,798 | Sep. 08, 1959 | J.R. Baker, W.A. Hoier | Automatic Table Positioning Mechanism for Grinders | cylindrical grinders |
| 2,923,206 | Feb. 02, 1960 | M. Kovac | Indexing Attachment for Milling Machines and the Like | indexers and dividers |
| 3,024,577 | Mar. 13, 1962 | W. Dralle, S.G. Brady | Helical Gear or Spline Grinder | gear 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 |
