| All Patents in class 123/41.72 |
Patents 16 -
30
of 39
      |
| Number | Date | Patentee | Title | Type |
| 515,116 | Feb. 20, 1894 | H.M. Crouan | Gas or Petroleum Motor | internal combustion engines |
| 548,628 | Oct. 29, 1895 | G.F. Conner | Gas Engine | gas and gasoline engines |
| 548,772 | Oct. 29, 1895 | J.R. Bridges | Explosive Gas Engine | gas and gasoline engines |
| 550,832 | Dec. 03, 1895 | J.W. Lambert | Gas-engine | gas and gasoline engines |
| 572,209 | Dec. 01, 1896 | E.E. Ludl | Explosive Engine | |
| 573,209 | Dec. 15, 1896 | F.E. Culver | Gas Engine | gas and gasoline engines |
| 584,188 | Jun. 08, 1897 | P.B. McLelland, S.D. McLelland | Gas or Vapor Engine | |
| 593,034 | Nov. 02, 1897 | F.W. Spacke | Gas Engine | gas and gasoline engines |
| 607,536 | Jul. 19, 1898 | M.F. Bates | Gas Engine | gas and gasoline engines |
| 611,125 | Sep. 20, 1898 | H.A. Humphrey | Gas or Oil Motor Engine | gas and gasoline engines |
| 618,435 | Jan. 31, 1899 | G. Palm | Gas Engine | gas and gasoline engines |
| 624,750 | May 09, 1899 | J. Butterworth, W.H. Butterworth | Gas Engine | gas and gasoline engines |
| 631,003 | Aug. 15, 1899 | C.P. Blake | Gas Engine | gas and gasoline engines |
| 632,814 | Sep. 12, 1899 | B.M. Bullock, J.D. Hay | Gas Engine | gas and gasoline engines |
| 640,668 | Jan. 02, 1900 | J.W. Lambert | Gas Engine Cylinder | cylinders |
