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Patents for John F. Crean
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,122,633Dec. 29, 1914E.S. PillsburyDynamo-electric machineinduction motors
1,130,017Mar. 02, 1915E.S. PullsburyCentrifugal circuit-changing device for electric motorsinduction motors
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