| All Patents in class 451/395 |
Patents 16 -
30
of 42
      |
| Number | Date | Patentee | Title | Type |
| 1,940,142 | Dec. 19, 1933 | R.W. Ott | Milling Machine | milling machines |
| 1,949,511 | Mar. 06, 1934 | C.G. Flygare | Grinding machine table operating mechanism | grinders |
| 1,952,432 | Mar. 27, 1934 | F.S. Haas | Grinding Machine | grinding machines |
| 1,969,063 | Aug. 07, 1934 | H.R. Isler, H. Ernst | Grinding Machine | grinding machines |
| 1,976,122 | Oct. 09, 1934 | F.S. Haas | Hydraulic Drive for Grinding Machines | grinding machines |
| 1,978,181 | Oct. 23, 1934 | J.R. Whittles | Hydraulically driven surface grinding machine | surface grinders |
| 1,978,350 | Oct. 23, 1934 | M.E. Martellotti | Automatic Convertible Feed System | hydraulic apparatus |
| 1,996,465 | Apr. 02, 1935 | H. Ernst | Hydroelectric Variable Feed Control | hydraulic apparatus |
| 1,996,467 | Apr. 02, 1935 | H. Ernst | Electromagnetic Hydraulic Control | hydraulic apparatus |
| 2,012,065 | Aug. 20, 1935 | R.L. Goetzel, F.S. Haas | Grinding Machine | grinding machines |
| 2,019,486 | Nov. 05, 1935 | L.F. Nenninger, H. Ernst | Hyraulically Propelled Machine Tool | hydraulic apparatus |
| 2,019,487 | Nov. 05, 1935 | L.F. Nenninger, H. Ernst | Feed Regulator for Machine Tools | metalworking machine mechanisms |
| 2,036,206 | Apr. 07, 1936 | H. Ernst | Machine Tool | milling machines |
| 2,036,293 | Apr. 07, 1936 | B. Sassen, M. Romaine, L.F. Nenninger | Machine for Milling, Profiling and the Like | profiling machines |
| 2,065,151 | Dec. 22, 1936 | E.G. Roehm, L.F. Nenninger, W. Peaslee | Grinding Machine | grinding machines |
