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| All Patents in class 123/335 | |||||
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| Number | Date | Patentee | Title | Type | |
| 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 | internal combustion engine governors | |
| 657,760 | Sep. 11, 1900 | I.H. Davis | Electric Igniter for Explosive-Engines | ignition systems | |
| 680,884 | Aug. 20, 1901 | R.L. Palmer | Sparking Igniter for Explosive Engines | ignition systems | |
| 1,591,032 | Jul. 06, 1926 | E.E. Fopay | Internal Combustion Engine | ||