| All Patents in class 123/198R |
Patents 16 -
30
of 31
      |
| Number | Date | Patentee | Title | Type |
| 392,191 | Nov. 06, 1888 | H.T. Dawson | Gas Engine | gas and gasoline engines |
| 412,883 | Oct. 15, 1889 | S. Griffin | Method of Operating Gas Engines | gas and gasoline engines |
| 525,358 | Sep. 04, 1894 | F.C. Olin | Gas Engine | gas and gasoline engines |
| 553,460 | Jan. 21, 1896 | W.W. Grant | Gas or Vapor Engine | |
| 557,493 | Mar. 31, 1896 | W.L. Corson, J.F. Daly | Gas Engine | gas and gasoline engines |
| 580,445 | Apr. 13, 1897 | F.H. Bates, F.G. Bates | Motor Engine | internal combustion engines |
| 585,504 | Jun. 29, 1897 | L.S. Brown | Gas Engine | |
| 588,061 | Aug. 10, 1897 | H.C. Hart | Gas Engine | gas and gasoline engines |
| 593,034 | Nov. 02, 1897 | F.W. Spacke | Gas Engine | gas and gasoline engines |
| 599,235 | Feb. 15, 1898 | P.L. Hider | Explosive Engine | gas and gasoline engines |
| 621,110 | Mar. 14, 1899 | G.W. Lewis | Gas or Vapor Engine | gas and gasoline engines |
| 658,993 | Oct. 02, 1900 | E.A. Mitchell | Internal-Combustion Engine | internal combustion engines |
| 661,439 | Nov. 06, 1900 | E. Boulier, A. Boulier | Explosion Engine | internal combustion engines |
| 949,129 | Feb. 15, 1910 | F. Purdy | Engine Indicating Apparatus | internal combustion engine indicators |
| 1,102,675 | Jul. 07, 1914 | J.D. Lowe | Internal-Combustion Engine | internal combustion engine lubrication |
