| All Patents in class 60/525 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 15,771 | Sep. 23, 1856 | T. McDonough | Air Engine | hot air engines |
| 228,714 | Jun. 08, 1880 | E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury | Air-Engine | hot air engines |
| 228,715 | Jun. 08, 1880 | E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury | Air-Engine | hot air engines |
| 228,716 | Jun. 08, 1880 | G. Patten, J. Merrill, J.A. Woodbury, E.F. Woodbury | Air-Engine | hot air engines |
| 325,640 | Sep. 01, 1885 | E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury | Hot Air Engine | hot air engines |
| 404,237 | May 28, 1889 | E.F. Woodbury, G. Patten, J. Merrill, J.A. Woodbury | Air-Engine | hot air engines |
