All Patents in class 91 |
Patents 436 -
450
of 796
|
Number | Date | Patentee | Title | Type |
1,653,350 | Dec. 20, 1927 | W. Ernst | High Speed Hydraulic Press | hydraulic presses |
1,668,927 | May 08, 1928 | J. Stumpf | Noncondensing steam engine | steam engines |
1,671,074 | May 22, 1928 | W.G. Hagmaier | Carriage feed | sawmill feed works |
1,672,561 | Jun. 05, 1928 | W. Ernst | High Speed Hydraulic Press | hydraulic presses |
1,684,729 | Sep. 18, 1928 | R.J. Denio | Automobile elevating apparatus | vehicle mechanic |
1,686,245 | Oct. 02, 1928 | H.G. Mueller | Reciprocating Steam Engine | steam engines |
1,687,369 | Oct. 09, 1928 | F.J. Lapointe | Hydraulic broaching machine | broaching machines |
1,693,109 | Nov. 27, 1928 | W. Ernst | Semiautomatic Valve | hydraulic valves |
1,696,868 | Dec. 25, 1928 | A.D. Skinner | Valve | steam engine valves |
1,722,506 | Jul. 30, 1929 | H.G. Sahlin | Drop hammer | drop hammers |
1,722,832 | Jul. 30, 1929 | D.H. West | Hydraulic transmission | hydraulic pumps |
1,731,482 | Oct. 15, 1929 | L.F. Nenninger, H. Ernst | Spindle Oscillator | grinding machines |
1,740,744 | Dec. 24, 1929 | F.A. Parsons | Fluid Transmission and Control Means for Machine Tools | milling machines |
1,763,142 | Jun. 10, 1930 | W. Ernst | Hydraulic Press | hydraulic presses |
1,781,416 | Nov. 11, 1930 | G.D. Sundstrand | Pump | |