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| All Patents in class 236/46R | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,228,515 | Jan. 14, 1941 | A.K. Foulds | Control Device | temperature controls | |
| 2,301,383 | Nov. 10, 1942 | E.J. Dillman | Heating System and Control Means Therefor | thermostats | |