| All Patents in class 261/DIG.25 |
Patents 1 -
10
of 20
      |
| Picture | Number | Date | Patentee | Title |
| | 39,448 | Aug. 04, 1863 | O.H. Kratze | Gas Engine |
| | 306,924 | Oct. 21, 1884 | I.N. Hopkins | Gas Engine |
| | 350,769 | Oct. 12, 1886 | G. Smyers, G. Rogot | Petroleum and Gas Motor |
 | 370,242 | Sep. 20, 1887 | J. Charter | Gas Engine |
| | 403,367 | May 14, 1889 | B. Parker, L.C. Parker | Gas or Gasoline Engine |
| | 439,200 | Oct. 28, 1890 | H.K. Shanck | Gas Engine |
| | 450,091 | Apr. 07, 1891 | L.G. Woolley | Vaporizer for Gas Engines |
| | 525,857 | Sep. 11, 1894 | J. McGeorge | Gas Engine |
| | 537,253 | Apr. 09, 1895 | G. Van Zandt | Gas Engine |
| | 544,879 | Aug. 20, 1895 | D. Best | Gas Engine and Generator |
