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公开(公告)号：US3344326A
公开(公告)日：1967-09-26
申请号：US38197064
申请日：1964-07-13
Applicant: CUTLER HAMMER INC
Inventor： RISBERG ROBERT L
CPC classification number: H02P27/06 , H02M5/4505 , H02P27/047 , H02P2201/03
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