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| All Patents in class 236/1D | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,520,922 | Dec. 30, 1924 | A.D. Baker | Boiler-Pressure Control | stationary boilers | |
| 2,222,662 | Nov. 26, 1940 | B.M. Guthrie | Control System for Heating Apparatus | solid fuel stokers | |
| 2,300,838 | Nov. 03, 1942 | C.H. Dicke | Stoker motor control | motor controls | |