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| All Patents in class 62/147 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,072,423 | Mar. 02, 1937 | E.J. Dillman | Refrigerating Apparatus | refrigeration apparatus | |
| 2,224,099 | Dec. 03, 1940 | E.J. Dillman | Refrigerating Apparatus | refrigeration apparatus | |