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Patents for Leffel Water Wheel & Engine Co.
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
4,056May 21, 1845J. LeffelImprovement in water-wheelswater wheels
34,150Jan. 14, 1862J. LeffelImproved water-wheelturbine water wheels
RE1,791Oct. 11, 1864J. LeffelImprovement in water-wheelsturbine water wheels
RE1,792Oct. 11, 1864J. LeffelImprovement in cases for water-wheelsturbine water wheels
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