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公开(公告)号：US2572320A
公开(公告)日：1951-10-23
申请号：US69882246
申请日：1946-09-23
Applicant: CUTLER HAMMER INC
Inventor： COX IRVIN W , DRUGMAND LESTER D , MEKELBURG RAYMOND E
IPC: H01J3/02
CPC classification number: H01J3/025 , H01J2893/0061
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