| All Patents in class 451/395 |
Patents 31 -
42
of 42
      |
| Number | Date | Patentee | Title | Type |
| 2,101,644 | Dec. 07, 1937 | L.F. Nenninger, C. Herfurth, H. Ernst | Grinding Machine | grinding machines |
| 2,114,349 | Apr. 19, 1938 | A.M. Johnson | Honing machine | honing machines |
| 2,142,028 | Dec. 27, 1938 | C. Herfurth | Grinding Machine | grinding machines |
| 2,157,946 | May 09, 1939 | R.D. Wortendyke | Infeed Cycle Control Mechanism for Grinding Machines | grinding machines |
| 2,170,494 | Aug. 22, 1939 | A.H. Dall, H. Ernst | Grinding Machine | grinding machines |
| 2,349,602 | May 23, 1944 | W.G. Baldenhofer | Hydraulic System for Plural Machine Tools | hydraulic apparatus |
| 2,360,671 | Oct. 17, 1944 | A.C. Janke, C.O. Graves, F.S. Haas | Surface Grinder | grinding machines |
| 2,396,147 | Mar. 05, 1946 | W.G. Baldenhofer | Cooling System for Hydraulically-Operated Machine Tools | hydraulic apparatus |
| 2,442,635 | Jun. 01, 1948 | R.D. Bennett | Spline or gear grinder | gear making machines |
| 2,448,245 | Aug. 31, 1948 | H.F. Bakewell | Grinding fixture | tool grinders |
| 2,671,294 | Mar. 09, 1954 | E.S. Cornell | Hydraulically Driven Machine Tool | surface grinders |
| 2,933,858 | Apr. 26, 1960 | A.H. Dall, A.C. Glenn | Surface Grinding Machine | surface grinders |
