| All Patents in class 123/69R |
Patents 1 -
10
of 23
      |
| Picture | Number | Date | Patentee | Title |
| | 259,736 | Jun. 20, 1882 | H. Wiedling | Gas Engine |
| | 279,657 | Jun. 19, 1883 | H.S. Maxim | Gas Engine |
| | 287,897 | Nov. 06, 1883 | C.W. Baldwin | Gas Engine |
| | 292,894 | Feb. 05, 1884 | J. Charter | Gas Engine |
| | 402,549 | Apr. 30, 1889 | S. Wilcox | Gas or Oil Engine |
| | 508,833 | Nov. 14, 1893 | H. Junkers, W. Von Oechelhaeurser | Gas Engine |
| | 528,006 | Oct. 23, 1894 | F.S. Mead | Gas Engine |
| | 541,773 | Jun. 25, 1895 | F.S. Mead | Gas Engine |
| | 544,586 | Aug. 13, 1895 | F.S. Mead | Gas or Oil Engine |
| | 548,142 | Oct. 15, 1895 | H. Schumm | Apparatus for Working Gas or Oil Engines |
