| All Patents in class 137/512.3 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 401,452 | Apr. 16, 1889 | L.H. Nash | Fuel Mixing Device for Gas Engines | carburetors |
| 434,695 | Aug. 19, 1890 | J.F. Daly, M.M. Barrett | Gas or Vapor Engine Attachment | carburetors |
| 1,339,500 | May 11, 1920 | C.A. Criqui, E.T. Larkin | Pump | diaphragm pumps |
| 1,708,158 | Apr. 09, 1929 | E.H. Stedman | Valve structure for compressors | air compressors |
| 2,131,871 | Oct. 04, 1938 | B.E. Folke | Injector Overflow Mechanism | water injectors |
| 3,702,624 | Nov. 14, 1972 | H. Fries | Piston Pump | water pump valves |
