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| All Patents in class 123/179.31 | |||||
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| Number | Date | Patentee | Title | Type | |
| 243,795 | Jul. 05, 1881 | J. Robson | Gas Engine | gas and gasoline engines | |
| 521,551 | Jun. 19, 1894 | J.W. Raymond | Apparatus for Starting Gas Engines | starters | |
| 657,384 | Sep. 04, 1900 | S.F. Beetz | Explosive Engine | internal combustion engines | |
| 1,566,095 | Dec. 15, 1925 | F.A. Jimerson | Fluid-actuated rotary machine | pneumatic tools | |
| 2,849,857 | Sep. 02, 1958 | J.H. Davids | Control for Engine Starting Means | starters | |