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| All Patents in class 236/75 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,043,194 | Jun. 02, 1936 | L.W. Eggleston | Valve | ||
| 2,061,536 | Nov. 17, 1936 | E.J. Dillman | Electrical Control System | ||
| 2,259,645 | Oct. 21, 1941 | W.S. Landon | Heating System and Control Means Therefor | ||
| 2,365,826 | Dec. 26, 1944 | W.S. Landon | Control Means | ||
| 2,389,111 | Nov. 13, 1945 | E.J. Dillman | Control Means | ||
| 2,461,328 | Feb. 08, 1949 | W.S. Landon | Controlling Means and System | ||