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公开(公告)号:US2730617A
公开(公告)日:1956-01-10
申请号:US25994851
申请日:1951-12-05
Applicant: BELL TELEPHONE LABOR INC
Inventor: MARMONT GEORGE H , OLIVER BERNARD M
IPC: H03K3/78
CPC classification number: H03K3/78
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公开(公告)号:US2607892A
公开(公告)日:1952-08-19
申请号:US65097846
申请日:1946-02-28
Applicant: BELL TELEPHONE LABOR INC
Inventor: MARMONT GEORGE H , OLIVER BERNARD M
IPC: H03K3/78
CPC classification number: H03K3/78
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