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All Patents in class 126/117 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 23 | Sep. 08, 1836 | F.A. Fickhardt | Furnace for Warming Buildings | |
![]() | 7,143 | Mar. 05, 1850 | J. MacGregor, Jr. | Heating-furnace |