| Patents for Hans Ernst |
Patents 1 -
15
of 92
      |
| Number | Date | Patentee | Title | Type |
| 1,719,693 | Jul. 02, 1929 | H. Ernst | Variable Displacement Pump | hydraulic pumps |
| 1,731,482 | Oct. 15, 1929 | L.F. Nenninger, H. Ernst | Spindle Oscillator | grinding machines |
| 1,778,452 | Oct. 14, 1930 | H. Ernst | Grinding Machinery | grinding machines |
| 1,788,761 | Jan. 13, 1931 | H. Ernst | Machine Tool Drive | metalworking power transmission |
| 1,820,653 | Aug. 25, 1931 | H. Ernst | Hydraulic Valve | hydraulic metalworking presses |
| 1,832,694 | Nov. 17, 1931 | L.F. Nenninger, H. Ernst | Auxiliary Manual Means for Actuating Hydraulic Motors | hydraulic apparatus |
| 1,835,976 | Dec. 08, 1931 | L.F. Nenninger, H. Ernst | Machine Tool Having Hydraulic Feed | hydraulic apparatus |
| 1,835,977 | Dec. 08, 1931 | L.F. Nenninger, H. Ernst | Hydraulic System | hydraulic apparatus |
| 1,835,978 | Dec. 08, 1931 | L.F. Nenninger, H. Ernst | Multiple Closed Circuit Hydraulic ystem | hydraulic apparatus |
| 1,835,979 | Dec. 08, 1931 | L.F. Nenninger, H. Ernst | Three-Pump Hydraulic System | hydraulic apparatus |
| 1,838,028 | Dec. 22, 1931 | L.F. Nenninger, H. Ernst | Deferred Action Reversing Mechanism | hydraulic apparatus |
| 1,864,589 | Jun. 28, 1932 | H. Ernst | Grinding Machinery | grinding machines |
| 1,872,431 | Aug. 16, 1932 | M.E. Martellotti, H. Ernst | Milling Machine | milling machines |
| 1,872,626 | Aug. 16, 1932 | C.W. Goodrich, H. Ernst | Hydraulic Valve | hydraulic apparatus |
| 1,872,627 | Aug. 16, 1932 | L.F. Nenninger, H. Ernst | Milling Machine | milling machines |
