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公开(公告)号：US3231770A
公开(公告)日：1966-01-25
申请号：US23860362
申请日：1962-11-19
Applicant: KDI CORP
Inventor： HYDE ROBERT W
CPC classification number: H02K21/227 , G04C15/0045 , H02K2201/12
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