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| All Patents in class 92/95 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,014,541 | Sep. 17, 1935 | F.W. Wappat | Pressure regulating valve | steam valves | |
| 2,306,768 | Dec. 29, 1942 | D.D. Wile | Control Device | refrigeration apparatus | |
| 2,520,386 | Aug. 29, 1950 | E.J. Dillman | Refrigeration Expansion Valve | refrigeration apparatus | |