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| All Patents in class 165/74 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,435,570 | Nov. 14, 1922 | E.L. Worbois | Storage Heater | heating apparatus | |
| 2,501,012 | Mar. 21, 1950 | C.W. St. Clair | Water-heating apparatus | veneer machines | |