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| All Patents in class 137/94 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,129,499 | Sep. 06, 1938 | W.S. Landon | Control Device | flow controls | |
| 2,240,763 | May 06, 1941 | E.J. Dillman | Control System | heating apparatus | |
| 2,389,111 | Nov. 13, 1945 | E.J. Dillman | Control Means | flow controls | |
| 2,398,099 | Apr. 09, 1946 | W.S. Landon | Heating System and Control Means Therefor | heating apparatus | |
| 2,493,297 | Jan. 03, 1950 | W.S. Landon | Orifice Cleaning Means | pipe and orifice cleaners | |