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公开(公告)号：US3531779A
公开(公告)日：1970-09-29
申请号：US3531779D
申请日：1968-11-01
Applicant: RCA CORP
Inventor： HOPKINS MAXWELL M , MILLER ARTHUR
IPC: C04B35/475 , H01G7/02 , G11C11/22
CPC classification number: C04B35/475 , H01G7/025
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