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公开(公告)号：US2498119A
公开(公告)日：1950-02-21
申请号：US4256848
申请日：1948-08-05
Applicant: CUTLER HAMMER INC
Inventor： DRUGMAND LESTER D , HAMPE EDWARD M
IPC: H01F38/06
CPC classification number: H01F38/06
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