| All Patents in class 123/39 |
Patents 1 -
10
of 36
      |
| Picture | Number | Date | Patentee | Title |
 | 3,597 | May 25, 1844 | S. Perry | Manner of Constructing an Inflammable Gas or Vapor Engine |
 | 31,722 | Mar. 19, 1861 | J.É. Lenoir | Air Engine |
| | 49,346 | Aug. 08, 1865 | P. Hugon | Gas Engine |
| | 226,972 | Apr. 27, 1880 | E. Buss | Gas-Engine |
| | 232,808 | Oct. 05, 1880 | L. Durand | Gas Engine |
| | 247,741 | Oct. 04, 1881 | E. Bénier | Gas Engine |
| | 260,620 | Jul. 04, 1882 | C.M. Sombart | Gas Engine |
| | 266,304 | Oct. 24, 1882 | P. Munzinger | Gas Engine |
| | 284,061 | Aug. 28, 1883 | G.H. Reynolds | Gas Engine |
 | 284,555 | Sep. 04, 1883 | G.M. Hopkins | Gas Engine |
