| All Patents in class 60/39.6 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 37,299 | Jan. 06, 1863 | H. Messer | Air Engine | hot air engines |
| 46,084 | Jan. 31, 1865 | M.G. Crane | Hot Air Engine | hot air engines |
| 50,506 | Oct. 17, 1865 | C. Stevens | Hot Air Engine | hot air engines |
| 63,416 | Apr. 02, 1867 | F. Million | Gas Engine | gas and gasoline engines |
| 269,146 | Dec. 12, 1882 | H. Wiedling | Gas Engine | gas and gasoline engines |
| 292,864 | Feb. 05, 1884 | J. Schweizer | Gas Motor Engine | gas and gasoline engines |
| 408,483 | Aug. 06, 1889 | H. Hoelljes | Method of Operating Gas Engines | gas and gasoline engines |
| 574,311 | Dec. 29, 1896 | J.W. Eisenhuth | Expansion Gas Engine | gas and gasoline engines |
| 581,385 | Apr. 27, 1897 | E.P. Woillard | Gas or Vapor Engine | cylinders |
| 611,125 | Sep. 20, 1898 | H.A. Humphrey | Gas or Oil Motor Engine | gas and gasoline engines |
| 620,602 | Mar. 07, 1899 | H.P. Maxim | Explosive Engine | gas and gasoline engines |
| 647,651 | Apr. 17, 1900 | W.R. Dow | Gas Engine | gas and gasoline engines |
| 655,473 | Aug. 07, 1900 | E.C. Wood | Gas Engine | gas and gasoline engines |
