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公开(公告)号：BR6914871D0
公开(公告)日：1973-01-02
申请号：BR21487169
申请日：1969-12-08
Applicant: MATSUSHITA ELECTRONICS CORP
Inventor： KAMO G , FUJIWARA S , HASEGAWA H , YOKOZANA M , KAWASAKI T
IPC: H01C9/06
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