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| All Patents in class 236/47 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,946,842 | Feb. 13, 1934 | E.J. Dillman | Temperature Control System | temperature control apparatus | |
| 2,301,383 | Nov. 10, 1942 | E.J. Dillman | Heating System and Control Means Therefor | thermostats | |