| All Patents in class 123/1R |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
| | 88,767 | Apr. 13, 1869 | J.B. Atwater | Motive Power |
| | 408,483 | Aug. 06, 1889 | H. Hoelljes | Method of Operating Gas Engines |
| | 417,759 | Dec. 24, 1889 | W. Von Oechelhaeuser | Gas Engine |
 | 542,846 | Jul. 16, 1895 | R. Diesel | Method and Apparatus for Converting Heat to Work |
| | 599,235 | Feb. 15, 1898 | P.L. Hider | Explosive Engine |
| | 633,878 | Sep. 26, 1899 | R. Mewes | Combustion Motor |
| | 642,176 | Jan. 30, 1900 | E. Thomson | Internal Combustion Engine |
| | 651,741 | Jun. 12, 1900 | J.C. Anderson | Explosive Liquid-Air Engine |
| | 651,742 | Jun. 12, 1900 | J.C. Anderson | Method of Moving Pistons of Explosive-Engines |
| | 658,367 | Sep. 25, 1900 | E. Apperson, E. Haynes | Explosive Engine |
