| All Patents in class 60/712 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
| | 155,087 | Sep. 15, 1874 | J. Hirsch | Hot Air Engines |
| | 417,624 | Dec. 17, 1889 | J.C. Beckfeld | Operating Gas Engines |
| | 484,168 | Oct. 11, 1892 | J. Wehrschmidt | Gas Engine |
| | 505,751 | Sep. 26, 1893 | B. Chatterton | Gas or Vapor Engine |
| | 633,338 | Sep. 19, 1899 | E. Uhlin, J. Clicquennoi, G. Dahlberg | Gas and Steam Convertable Engine |
| | 654,761 | Jul. 31, 1900 | G. Palm | Combined Steam and Explosive Engine |
| | RE12,021 | Aug. 19, 1902 | E. Uhlin, J. Clicquennoi, G. Dahlberg | Gas and Steam Convertable Engine |
| | RE12,024 | Aug. 26, 1902 | E. Uhlin, J. Clicquennoi, G. Dahlberg | Gas and Steam Convertible Engine |
