| All Patents of Type: internal combustion engine valves |
Patents 1 -
15
of 62
      |
| Number | Date | Patentee | Title | Type |
| 77,387 | Apr. 28, 1868 | W.H. Laubach | Valve for Gas Engine | internal combustion engine valves |
| DE-30,576 | Apr. 07, 1884 | J. Spiel | Mixing and Suction Valve for Gas Engines | gas and gasoline engines |
| 306,314 | Oct. 07, 1884 | C.G. Beechey | Gas Regulating Valve for Gas Engines | internal combustion engine valves |
| 335,571 | Feb. 09, 1886 | J. Ferguson | Engine Valve | internal combustion engine valves |
| 426,297 | Apr. 22, 1890 | J. Mohs | Gas Engine | internal combustion engine valves |
| 433,246 | Jul. 29, 1890 | S. Lawson | Valve for Gas Engines | internal combustion engine valves |
| 452,568 | May 19, 1891 | E.W. Evans | Gas Engine | gas and gasoline engines |
| DE-64,971 | Feb. 24, 1892 | J. Spiel | A Flow Valve for Gas and Petroleum | internal combustion engine valves |
| 556,037 | Mar. 10, 1896 | C.W. Weiss | Valve | internal combustion engine valves |
| 577,898 | Mar. 02, 1897 | J. Walrath | Explosive Engine | internal combustion engine valves |
| 580,172 | Apr. 06, 1897 | M. Blakey | Gas or Other Explsive Engine | internal combustion engine valves |
| 580,444 | Apr. 13, 1897 | H.C. Baker | Gas Engine | internal combustion engine valves |
| 581,783 | May 04, 1897 | T. Small | Gas Engine | internal combustion engine valves |
| 584,622 | Jun. 15, 1897 | J.O. Brown | Gas Engine | internal combustion engine valves |
| 610,682 | Sep. 13, 1898 | W.M. Kelch, J.N. Kelly | Gas Engine | gas and gasoline engines |
