| All Patents in class 123/61R |
Patents 1 -
10
of 20
      |
| Picture | Number | Date | Patentee | Title |
 | 3,597 | May 25, 1844 | S. Perry | Manner of Constructing an Inflammable Gas or Vapor Engine |
 | 4,800 | Oct. 07, 1846 | S. Perry | Gas Engine |
| | 12,715 | Apr. 17, 1855 | A. Drake | Explosive Gas Engine |
| | 272,130 | Feb. 13, 1883 | E. Etève, C.C. Lallement | Gas Engine |
| | 280,083 | Jun. 26, 1883 | C. Rohn | Gas Engine |
| | 332,315 | Dec. 15, 1885 | S. Wilcox | Gas Engine |
| | 402,549 | Apr. 30, 1889 | S. Wilcox | Gas or Oil Engine |
| | 437,776 | Oct. 07, 1890 | E.H. Gaze | Gas Engine |
| | 519,863 | May 15, 1894 | D.C. Luce | Gas Engine |
| | 559,017 | Apr. 28, 1896 | J.M. Worth | Gas Engine |
