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| All Patents in class 137/624.13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 604,241 | May 17, 1898 | D.M. Tuttle | Gas Engine | gas and gasoline engines | |
| 873,822 | Dec. 17, 1907 | F.L. Wolfe | Whistle Valve | valves | |
| 1,792,222 | Feb. 10, 1931 | H.H. Hardinge | Oil burner | industrial furnaces | |
| 2,671,292 | Mar. 09, 1954 | E.Y. Seborg, H.J. Caldwell | Control Mechanism for Honing Machines | machine tool controls | |
| 4,789,001 | Dec. 06, 1988 | L.W. Durham, B.S. Backe | Operating System for a Valve | ||