| All Patents in class 123/23 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 36,581 | Sep. 30, 1862 | M.D. Whipple | Hot Air Engine | hot air engines |
| 46,084 | Jan. 31, 1865 | M.G. Crane | Hot Air Engine | hot air engines |
| 52,305 | Jan. 30, 1866 | T. McDonough | Hot Air Engine | hot air engines |
| 111,087 | Jan. 17, 1871 | A.K. Rider | Hot Air Engine | hot air engines |
| 133,649 | Dec. 03, 1872 | C.P. Leavitt | Hot Air Engines | hot air engines |
| 608,845 | Aug. 09, 1898 | R. Diesel | Internal Combustion Engine | diesel engines |
| 633,878 | Sep. 26, 1899 | R. Mewes | Combustion Motor | internal combustion engines |
