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| All Patents in class 236/99B | |||||
| Picture | Number | Date | Patentee | Title | |
| 2,286,630 | Jun. 16, 1942 | P.S. Russel, W.S. Landon | Heating Apparatus | ||
| 2,389,111 | Nov. 13, 1945 | E.J. Dillman | Control Means | ||