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公开(公告)号：US3548333A
公开(公告)日：1970-12-15
申请号：US3548333D
申请日：1968-01-12
Applicant: IBM
Inventor： BAKKE ERNEST P , BENSON ALLEN BRYCE , BYMERS RONALD J
CPC classification number: H03F3/45479 , H03F3/347 , H03F3/45071
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