| All Patents in class 123/74AA |
Patents 16 -
26
of 26
      |
| Number | Date | Patentee | Title | Type |
| 426,736 | Apr. 29, 1890 | J.J. Pearson | Method of Operating Gas Engines | gas and gasoline engines |
| 545,502 | Sep. 03, 1895 | H.H. Nennegin | Gas Engine | gas and gasoline engines |
| 576,430 | Feb. 02, 1897 | F. Burger | Explosive Engine | |
| 591,862 | Oct. 19, 1897 | C.L. Mayhew | Gas Engine | gas and gasoline engines |
| 598,986 | Feb. 15, 1898 | G.H. Gere | Combustible Vapor Engine | gas and gasoline engines |
| 601,210 | Mar. 22, 1898 | S.E. Maxwell | Gas Engine | gas and gasoline engines |
| 633,338 | Sep. 19, 1899 | E. Uhlin, J. Clicquennoi, G. Dahlberg | Gas and Steam Convertable Engine | |
| 633,339 | Sep. 19, 1899 | E. Uhlin, J. Clicquennoi, G. Dahlberg | Combination Steam and Gas Engine | steam engines |
| 634,509 | Oct. 10, 1899 | T.J. Sturtevant | Gas Engine | gas and gasoline engines |
| 666,260 | Jan. 22, 1901 | L.F. Burger | Gas Engine | internal combustion engines |
| RE12,021 | Aug. 19, 1902 | E. Uhlin, J. Clicquennoi, G. Dahlberg | Gas and Steam Convertable Engine | |
