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All Patents in class 418/244 | |||||
Number | Date | Patentee | Title | Type | |
15,281 | Jul. 08, 1856 | T. Turton, J.M. Colman | Rotary Steam Engine | rotary steam engines | |
447,831 | Mar. 10, 1891 | M. Johnson | Rotary Engine | rotary steam engines | |
878,543 | Feb. 11, 1908 | W. Krygowski | Steam Engine | steam engines |