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| All Patents in class 337/352 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,102,176 | Dec. 14, 1937 | E.J. Dillman | Control Means | temperature control apparatus | |
| 2,139,615 | Dec. 06, 1938 | E.J. Dillman | Heating Apparatus and Control Means Therefor | temperature controls | |
| 2,303,028 | Nov. 24, 1942 | E.J. Dillman | Controlling Means and Actuating Means Therefor | electric switches | |