| All Patents in class 123/21 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 597,389 | Jan. 18, 1898 | W.R. Bullis | Gasolene Engine | gas and gasoline engines |
| 620,926 | Mar. 14, 1899 | L.J. Hirt | Gas Engine | gas and gasoline engines |
| 629,904 | Aug. 01, 1899 | L.J. Hirt | Gas Engine | gas and gasoline engines |
| 632,913 | Sep. 12, 1899 | F. Burger | Gas Engine | gas and gasoline engines |
| 662,040 | Nov. 20, 1900 | T.J. Sturtevant, T.L. Sturtevant | Explosion Engine | internal combustion engines |
| 714,853 | Dec. 02, 1902 | B.A. Williams, F.G. Bates | Gas or Vapor Engine | internal combustion engines |
