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All Patents in class 418/212 | |||||
Number | Date | Patentee | Title | Type | |
23,852 | May 03, 1859 | C. Miller | Rotary Steam Engine | rotary steam engines | |
260,978 | Jul. 11, 1882 | R. Hodson | Rotary Engine | rotary steam engines | |
459,861 | Sep. 22, 1891 | P.B. Taylor | Rotary Engine | rotary steam engines |