| All Patents in class 123/345 |
Patents 16 -
28
of 28
      |
| Number | Date | Patentee | Title | Type |
| 582,620 | May 18, 1897 | J.A. Charter | Gas Engine | internal combustion engines |
| 600,754 | Mar. 15, 1898 | B.C. Van Duzen | Gas Engine | gas and gasoline engines |
| 617,388 | Jan. 10, 1899 | W.F. Bauroth, E. Bauroth | Gas Engine | gas and gasoline engines |
| 626,933 | Jun. 13, 1899 | J. Reid | Apparatus for Drilling Wells | oilfield machinery |
| 653,876 | Jul. 17, 1900 | F.C. Olin | Gas Engine | gas and gasoline engines |
| 657,140 | Sep. 04, 1900 | J.H. Cogswell, G.W. Starr | Explosive Gas Engine | gas and gasoline engines |
| 674,580 | May 21, 1901 | H.J. Hartig | Speed-Regulator for Explosive-Engines | internal combustion engine governors |
| 710,647 | Oct. 07, 1902 | L.W. Witry | Speed-regulator for explosive-engines | gas and gasoline engines |
| 718,481 | Jan. 13, 1903 | A. Soames, W. Langdon-Davies | Internal Combustion Engine | internal combustion engine valves |
| 720,126 | Feb. 10, 1903 | L.A. Frayer | Speed Regulator for Explosive Engines | internal combustion engine governors |
| 801,927 | Oct. 17, 1905 | H.J. Smith | Fuel Mixing Device for Gas Engines | carburetors |
| 821,546 | May 22, 1906 | H.E. Smallbone | Multiple Cylinder Engine | axial internal combustion engines |
| 1,346,204 | Jul. 13, 1920 | R.M. Hvid | Valve for Hydrocarbon Engine | valves |
