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公开(公告)号：US2767350A
公开(公告)日：1956-10-16
申请号：US43375454
申请日：1954-06-01
Applicant: GERA CORP
Inventor： BAZARIAN ALBERT V , GRIMM JOHN F , LEO GUSMAN , SILVER MARVIN N
CPC classification number: H03K29/00 , H01J17/48 , H01J2893/007
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