| All Patents in class 91/178 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 335,884 | Feb. 09, 1886 | G.W. Bigelow | Direct Acting Engine | steam engines |
| 336,743 | Feb. 23, 1886 | F. Plumb | Twin Cylinder Single Acting Engine | steam engine valve gear |
| 356,419 | Jan. 18, 1887 | F.W. Ofeldt | Gas Engine | gas and gasoline engines |
| 414,045 | Oct. 29, 1889 | E. Huber | Steam Engine | steam traction engines |
| 447,671 | Mar. 03, 1891 | J.H. Eickershoff | Compound Steam Engine | compound steam engines |
| 481,773 | Aug. 30, 1892 | G.S. Strong | Four-cylinder engine | steam engines |
| 782,814 | Feb. 21, 1905 | F.H. Ball | Steam Engine | steam engines |
| 2,170,503 | Aug. 22, 1939 | M.E. Martellotti, H. Ernst | Milling Machine | milling machines |
| 2,430,394 | Nov. 04, 1947 | R.H. Shepard, B.E. Folke | Hydraulic Pump | hydraulic pumps |
| 2,706,892 | Apr. 26, 1955 | A.H. Dall, H. Fritschi | Tracer Control Circuit for Pattern Controlled Machines | profiling machines |
| 2,972,868 | Feb. 28, 1961 | B. Sassen | Machine tool slide control | |
