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All Patents in class 418/146
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
448,213Mar. 17, 1891M.P. ElgenRotary Enginerotary steam engines
459,424Sep. 15, 1891G.A. ThomsonRotary Enginerotary steam engines
460,522Sep. 29, 1891M.J. BrethertonRotary Enginerotary steam engines
616,643Dec. 27, 1898E.B. TreeRotary Enginerotary steam engines
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