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| All Patents in class 313/125 | |||||
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| Number | Date | Patentee | Title | Type | |
| 424,027 | Mar. 25, 1890 | E.F. Roberts | Igniting Apparatus for Gas Engines | ignition systems | |
| 541,773 | Jun. 25, 1895 | F.S. Mead | Gas Engine | internal combustion engines | |
| 588,466 | Aug. 17, 1897 | A.G. Pace | Combustion Engine | internal combustion engines | |
| RE11,775 | Sep. 26, 1899 | A.G. Pace | Combustion Engine | internal combustion engines | |
| 1,401,585 | Dec. 27, 1921 | V.D. Collins, A.F. Collins | Spark Plug | spark plugs | |