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公开(公告)号：US2944225A
公开(公告)日：1960-07-05
申请号：US63958357
申请日：1957-02-11
Applicant: IBM
Inventor： BRUCE GEORGE D , EIBSEN ROBERT L
IPC: H02M7/5383 , H03K3/30
CPC classification number: H02M7/53835 , H03K3/30
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