| All Patents in class 60/517 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 153,440 | Jul. 28, 1874 | J. Laubereau | Air-Motors | hot air engines |
| 228,717 | Jun. 08, 1880 | E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury | Heaters for Air-Engines | hot air engines |
| 289,484 | Dec. 04, 1883 | E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury | Air Engine Heater | hot air engines |
| 289,485 | Dec. 04, 1883 | E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury | Heater for Air Engines | hot air engines |
| 419,805 | Jan. 21, 1890 | C.W. Weiss | Thermo Dynamic Motor | external combustion engines |
| 514,169 | Feb. 06, 1894 | N. Tesla | Reciprocating engine | |
| 723,660 | Mar. 24, 1903 | H. Essex | Caloric-engine | hot air engines |
