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| All Patents in class 137/483 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,298,068 | Mar. 25, 1919 | E.R. Klemm, B.T. McCanna | Gas-engine governor and auxiliary air-inlet | internal combustion engine governors | |
| 2,466,582 | Apr. 05, 1949 | E.J. Dillman | Speed and Altitude Responsive Control for Aircraft Heaters | heating apparatus | |