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All Patents in class 415/198.1
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
34,150Jan. 14, 1862J. LeffelImproved water-wheelturbine water wheels
415,561Nov. 19, 1889W.H. RidgwayWater-wheelturbine water wheels
1,967,316Jul. 24, 1934D.A. MeekerPump
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