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公开(公告)号：US1943185A
公开(公告)日：1934-01-09
申请号：US64163632
申请日：1932-11-07
Applicant: MONITOR CONTROLLER CO
Inventor： NEVILLE WILLIAM H
IPC: H02P7/20
CPC classification number: H02P7/20 , Y10T307/484
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