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| All Patents in class 337/359 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,098,181 | Nov. 02, 1937 | E.J. Dillman | Electric Switch | ||
| 2,118,759 | May 24, 1938 | E.J. Dillman | Heating System and Control Means Therefor | ||