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| All Patents in class 122/336 | |||||
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| Number | Date | Patentee | Title | Type | |
| 604,509 | May 24, 1898 | W.J. Wickes, L. Baker | Upright water-tube boiler | stationary boilers | |
| 696,240 | Mar. 25, 1902 | C. Holly | Steam Boiler | stationary boilers | |