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| All Patents in class 122/98 | |||||
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| Number | Date | Patentee | Title | Type | |
| 161,122 | Mar. 23, 1875 | J.C. Hoadley | Steam Boiler Furnace | stationary boilers | |
| 241,480 | May 17, 1881 | J. Enright | Steam Boiler Furnace | stationary boilers | |