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| All Patents in class 123/190.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 386,213 | Jul. 17, 1888 | L.H. Nash | Ignitor for Gas Engines | ignition systems | |
| 873,963 | Dec. 17, 1907 | B.A. Slocum | Internal Combustion Engine | internal combustion engines | |
| 1,452,995 | Apr. 24, 1923 | M.A. Yeakley | Valve-operating connection | internal combustion engines | |