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公开(公告)号:US3444457A
公开(公告)日:1969-05-13
申请号:US3444457D
申请日:1967-03-23
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor: ROSA JOHN
IPC: G05F1/20 , G05F1/30 , H03K3/313 , H03K3/352 , H02P13/06 , H02M5/12 , H02M5/20
CPC classification number: H03K3/352 , G05F1/20 , G05F1/30 , H03K3/313