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| All Patents in class 62/228.3 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,267,607 | Dec. 23, 1941 | W.J. Harvey | Refrigerating Apparatus | refrigeration apparatus | |
| 2,301,725 | Nov. 10, 1942 | D.D. Wile | Apparatus for Conditioning Air | air conditioning apparatus | |