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| All Patents in class 337/323 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,926,706 | Sep. 12, 1933 | E.J. Dillman, L.W. Eggleston | Control Device | industrial control apparatus | |
| 1,953,469 | Apr. 03, 1934 | E.J. Dillman, L.W. Eggleston | Electric Switch | electric switches | |
| 2,209,767 | Jul. 30, 1940 | E.J. Dillman | Thermostat | thermostats | |