| All Patents in class 409/170 |
Patents 16 -
30
of 61
      |
| Number | Date | Patentee | Title | Type |
| 1,912,413 | Jun. 06, 1933 | E.J. Svenson | Milling machine | |
| 1,940,142 | Dec. 19, 1933 | R.W. Ott | Milling Machine | milling machines |
| 1,961,124 | Jun. 05, 1934 | W.D. Archea | Milling Machinery | milling machines |
| 1,961,523 | Jun. 05, 1934 | L.F. Nenninger | Milling Machine | milling machines |
| 1,969,063 | Aug. 07, 1934 | H.R. Isler, H. Ernst | Grinding Machine | grinding machines |
| 1,976,105 | Oct. 09, 1934 | W.D. Archea | Milling Machine | milling machines |
| 1,976,108 | Oct. 09, 1934 | W.D. Archea | Milling Machine | milling machines |
| 1,976,137 | Oct. 09, 1934 | B. Sassen, L.F. Nenninger | Hydraulically Actuated Slide for Machine Tools | metalworking machine mechanisms |
| 1,978,346 | Oct. 23, 1934 | C.W. Goodrich, H. Ernst | Delayed Trip for Hydraulic Circuits | hydraulic apparatus |
| 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 |
| 1,996,466 | Apr. 02, 1935 | H. Ernst | Pressure Responsive Hydraulic Feed Control Mechanism | hydraulic apparatus |
| 1,996,467 | Apr. 02, 1935 | H. Ernst | Electromagnetic Hydraulic Control | hydraulic apparatus |
| 1,996,468 | Apr. 02, 1935 | H. Ernst | Electrical Control for Hydraulic Motors | motor controls |
| 1,998,003 | Apr. 16, 1935 | L.F. Nenninger, C.W. Goodrich, H. Ernst | Hydraulic Feed Control | hydraulic apparatus |
