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All Patents in class 418/182
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
79,781Jul. 07, 1868S.P. RugglesImprovement in Rotary Fluid-Elevatorsrotary pumps
816,285Mar. 27, 1906I. AbbottRotary Enginerotary steam engines
878,543Feb. 11, 1908W. KrygowskiSteam Enginesteam engines
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