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| All Patents in class 62/212 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,558,930 | Jul. 03, 1951 | F.Y. Carter | Thermostatic Expansion Valve Having Pressure Responsive Means for Varying the Superheat Setting Thereof | temperature controls | |
| 2,577,450 | Dec. 04, 1951 | F.Y. Carter | Refrigeration Expansion Valve | valves | |