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All Patents in class 338/190
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
372,012Oct. 25, 1887I.W. ColburnElectrical resistance-boardelectrical devices
1,437,629Dec. 05, 1922H.L. ZabriskieRheostat
1,552,373Sep. 01, 1925B.F. WinterhoffElectric gauge for gasoline tanksmotor vehicles
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