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| All Patents in class 236/80R | |||||
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| Number | Date | Patentee | Title | Type | |
| 81,649 | Sep. 01, 1868 | A. Kipp, Jr. | Improvement in steam and fire-regulators | stationary boilers | |
| 2,251,441 | Aug. 05, 1941 | E.J. Dillman | Valve | flow controls | |
| 2,501,012 | Mar. 21, 1950 | C.W. St. Clair | Water-heating apparatus | veneer machines | |
| 2,566,173 | Aug. 28, 1951 | E.J. Dillman | Pilot Operated Valve | valves | |