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All Patents in class 418/146 | |||||
Number | Date | Patentee | Title | Type | |
448,213 | Mar. 17, 1891 | M.P. Elgen | Rotary Engine | rotary steam engines | |
459,424 | Sep. 15, 1891 | G.A. Thomson | Rotary Engine | rotary steam engines | |
460,522 | Sep. 29, 1891 | M.J. Bretherton | Rotary Engine | rotary steam engines | |
616,643 | Dec. 27, 1898 | E.B. Tree | Rotary Engine | rotary steam engines |