| All Patents in class 451/246 |
Patents 31 -
45
of 47
      |
| Number | Date | Patentee | Title | Type |
| 2,006,554 | Jul. 02, 1935 | C. Herfurth | Grinding Machine | grinding machines |
| 2,006,724 | Jul. 02, 1935 | F.J. Theler | Grinding Machine | grinding machines |
| 2,025,885 | Dec. 31, 1935 | F.S. Haas, L.F. Nenninger | Grinding Machine | grinding machines |
| 2,033,449 | Mar. 10, 1936 | E.G. Roehm, M. Romaine | Machine Tool Mechanism | grinding machines |
| 2,135,893 | Nov. 08, 1938 | E.C. Head | Gear cutter | gear hob cutters |
| 2,147,893 | Feb. 21, 1939 | F.S. Haas | Grinding Machine | grinding machines |
| 2,157,946 | May 09, 1939 | R.D. Wortendyke | Infeed Cycle Control Mechanism for Grinding Machines | grinding machines |
| 2,187,227 | Jan. 16, 1940 | R.E. Flanders | Grinding Machine | cylindrical grinders |
| 2,249,065 | Jul. 15, 1941 | F.J. Theler | Grinding Machine | grinding machines |
| 2,422,531 | Jun. 17, 1947 | W.B. Heinz, G.L. Dannehower | Apparatus for cutting bars, tubes, and the like | |
| 2,526,796 | Oct. 24, 1950 | G.H. Asbridge | Precision grinding machine | |
| 2,555,852 | Jun. 05, 1951 | F.E. Hawley | Wheel Dressing Means | wheel truing devices |
| 2,641,873 | Jun. 16, 1953 | F.S. Haas | Automatic Truing Mechanism | grinder dressers |
| 2,981,038 | Apr. 25, 1961 | E.V. Flanders | Method of Grinding Helical Forms | thread grinders |
| 3,043,056 | Jul. 10, 1962 | J. Decker, A.D. Stuckey | Machine Tool Construction to Eliminate Effect of Expansion of Members | metalworking machine mechanisms |
