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| All Patents in class 251/85 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,183,207 | Dec. 12, 1939 | D.D. Wile | Valve Structure | gas and liquid valves | |
| 2,198,070 | Apr. 23, 1940 | D.D. Wile | Pressure Valve | gas and liquid valves | |
| 2,520,386 | Aug. 29, 1950 | E.J. Dillman | Refrigeration Expansion Valve | refrigeration apparatus | |