| All Patents in class 123/38 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 32,455 | May 28, 1861 | P. Shaw | Hot Air Engine | hot air engines |
| 124,520 | Mar. 12, 1872 | S.E. Tuttle | Improvement in Atmospheric Engines | hot air engines |
| 170,813 | Dec. 07, 1875 | F. Bürger | Coal-Oil Motor | coal oil engines |
| 195,585 | Sep. 25, 1877 | F. Dieckmann | Gas-Engines | gas and gasoline engines |
| 236,258 | Jan. 04, 1881 | J. Ravel | Oscillating Gas Motor | gas and gasoline engines |
| 242,401 | May 31, 1881 | G. Wacker | Gas Engine | gas and gasoline engines |
| 271,902 | Feb. 06, 1883 | L.H. Nash | Gas Engine | gas and gasoline engines |
| 288,632 | Nov. 20, 1883 | W. Hammerschmidt | Gas Engine | gas and gasoline engines |
| 432,114 | Jul. 15, 1890 | G.B. Brayton | Gas and Air Engine | |
