| All Patents in class 123/335 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 437,508 | Sep. 30, 1890 | N.A. Otto | Gas or Motor Engine |
| | 573,628 | Dec. 22, 1896 | G.S. Tiffany | Gas or Vapor Engine |
 | 579,789 | Mar. 30, 1897 | P.T. Coffield | Gas Engine |
| | 657,760 | Sep. 11, 1900 | I.H. Davis | Electric Igniter for Explosive-Engines |
| | 680,884 | Aug. 20, 1901 | R.L. Palmer | Sparking Igniter for Explosive Engines |
| | 1,265,876 | May 14, 1918 | M. Bomberger | Spark and Exhaust Mechanism for Explosive-Engines |
 | 1,591,032 | Jul. 06, 1926 | E.E. Fopay | Internal Combustion Engine |
