| All Patents in class 55/DIG.28 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 455,388 | Jul. 07, 1891 | J. Charter | Gas Engine | gas and gasoline engines |
| 661,854 | Nov. 13, 1900 | X. De le Croix | Gas-Engine Attachment | gas and gasoline engines |
| 735,376 | Aug. 04, 1903 | F.G. Hobart | Crude Oil Vaporizer | evaporating apparatus |
| 806,125 | Dec. 05, 1905 | F.O. Farwell | Rotary Explosive Engine | rotary engines |
| 1,286,951 | Dec. 10, 1918 | D.P. Davies | Air Strainer | air supply apparatus |
| 1,302,716 | May 06, 1919 | C.E. Sargent | Dust Separator | air supply apparatus |
| 1,847,452 | Mar. 01, 1932 | H.P. Vaughan | Air Cleaner | air supply apparatus |
