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Patents for Joel R. Cook
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,292,714Jan. 28, 1919J.R. CookElectric motor-switchelectric motors
1,325,232Dec. 16, 1919J.R. CookElectric-motor casingelectric motors
1,535,766Apr. 28, 1925J.R. CookCentrifugal motor switchcentrifugal motor switches
1,781,441Nov. 11, 1930J.R. CookElectric switchelectric switches
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