| All Patents in class 123/70R |
Patents 16 -
30
of 35
      |
| Number | Date | Patentee | Title | Type |
| 356,447 | Jan. 25, 1887 | J. Charter | Gas Engine | gas and gasoline engines |
| 424,000 | Mar. 25, 1890 | G.E. Hibbard | Rotary Gas Engine | rotary engines |
| 428,801 | May 27, 1890 | H. Campbell | Gas Motor Engine | |
| 432,260 | Jul. 15, 1890 | G.B. Brayton | Hydrocarbon Engine | |
| 508,833 | Nov. 14, 1893 | H. Junkers, W. Von Oechelhaeurser | Gas Engine | gas and gasoline engines |
| 528,006 | Oct. 23, 1894 | F.S. Mead | Gas Engine | gas and gasoline engines |
| 541,773 | Jun. 25, 1895 | F.S. Mead | Gas Engine | internal combustion engines |
| 544,586 | Aug. 13, 1895 | F.S. Mead | Gas or Oil Engine | gas and gasoline engines |
| 548,824 | Oct. 29, 1895 | H.F. Wallmann | Petroleum or Gas Motor | |
| 558,943 | Apr. 28, 1896 | L.S. Gardner | Vapor Motor | |
| 567,954 | Sep. 22, 1896 | C.D. Anderson | Gas Engine | internal combustion engines |
| 603,914 | May 10, 1898 | F.S. Mead | Gas or Oil Engine | oil engines |
| 607,613 | Jul. 19, 1898 | W.O. Worth | Hydrocarbon Gas Engine | gas and gasoline engines |
| 620,554 | Feb. 28, 1899 | J.W. Eisenhuth | Air and Gas Engine | gas and gasoline engines |
| 623,361 | Apr. 18, 1899 | J.H. Frew | Oscillating Gas or Steam Engine | gas and gasoline engines |
