| All Patents in class 123/39 |
Patents 16 -
30
of 36
      |
| Number | Date | Patentee | Title | Type |
| 306,712 | Oct. 21, 1884 | J. Atkinson | Gas Engine | ignition systems |
| 306,924 | Oct. 21, 1884 | I.N. Hopkins | Gas Engine | gas and gasoline engines |
| 306,933 | Oct. 21, 1884 | S. Lawson | Gas Engine | gas and gasoline engines |
| 307,057 | Oct. 21, 1884 | S. Lawson | Gas Engine | gas and gasoline engines |
| 312,494 | Feb. 17, 1885 | L.H. Nash | Gas Engine | gas and gasoline engines |
| 312,496 | Feb. 17, 1885 | L.H. Nash | Gas Engine | gas and gasoline engines |
| 324,554 | Aug. 18, 1885 | H. Hartig | Gas Engine | gas and gasoline engines |
| 326,561 | Sep. 22, 1885 | L.N. Hopkins, G.M. Hopkins | Gas Engine | gas and gasoline engines |
| 326,562 | Sep. 22, 1885 | L.N. Hopkins, G.M. Hopkins | Gas Engine | gas and gasoline engines |
| 328,170 | Oct. 13, 1885 | J.S. Wood | Gas Engine | gas and gasoline engines |
| 330,317 | Nov. 10, 1885 | W.A. Graham | Gas Engine | gas and gasoline engines |
| 363,497 | May 24, 1887 | J.S. Wood | Gas Engine | gas and gasoline engines |
| 376,212 | Jan. 10, 1888 | H.K. Shanck | Gas Engine | gas and gasoline engines |
| 379,397 | Mar. 13, 1888 | I.N. Hopkins | Gas Engine | gas and gasoline engines |
| 381,488 | Apr. 17, 1888 | G.W. Stewart | Gas Engine | gas and gasoline engines |
