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| All Patents in class 137/316 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,251,441 | Aug. 05, 1941 | E.J. Dillman | Valve | flow controls | |
| 2,532,896 | Dec. 05, 1950 | E.J. Dillman | Temperature Operated Valve | temperature controls | |