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All Patents in class 338/301
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
928,394Jul. 20, 1909H.I. Finch, C.R. MestonRheostatelectrical devices
1,369,407Feb. 22, 1921F. DiehlRheostat
1,437,629Dec. 05, 1922H.L. ZabriskieRheostat
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