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| All Patents in class 137/505.36 | |||||
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| Number | Date | Patentee | Title | Type | |
| 306,314 | Oct. 07, 1884 | C.G. Beechey | Gas Regulating Valve for Gas Engines | internal combustion engine valves | |
| 1,946,882 | Feb. 13, 1934 | P.S. Russel | Valve | industrial valves | |