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公开(公告)号：US2787712A
公开(公告)日：1957-04-02
申请号：US45990454
申请日：1954-10-04
Applicant: BELL TELEPHONE LABOR INC
Inventor： PRIEBE JR HENRY F , SPENCER JR ALBERT E
IPC: H03K3/282
CPC classification number: H03K3/2823
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公开(公告)号：US2983878A
公开(公告)日：1961-05-09
申请号：US78358358
申请日：1958-12-29
Applicant: BELL TELEPHONE LABOR INC
Inventor： PRIEBE JR HENRY F
IPC: H03K3/30
CPC classification number: H03K3/30
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