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公开(公告)号:US3014982A
公开(公告)日:1961-12-26
申请号:US70649957
申请日:1957-12-31
Applicant: BELL TELEPHONE LABOR INC
Inventor: OSTENDORF JR BERNARD , SELLERS JR GABE A
CPC classification number: H04L12/00
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公开(公告)号:US3005041A
公开(公告)日:1961-10-17
申请号:US70646257
申请日:1957-12-31
Applicant: BELL TELEPHONE LABOR INC
Inventor: SELLERS JR GABE A
CPC classification number: H04L12/00
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