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公开(公告)号:US3027432A
公开(公告)日:1962-03-27
申请号:US83452859
申请日:1959-08-18
Applicant: BELL TELEPHONE LABOR INC
Inventor: JORDAN HOMER G , PURGETT LAWRENCE J , RESTALL JR WILLIAM E , SCHWEIZER PAUL E
IPC: H04M1/08
CPC classification number: H04M1/08
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公开(公告)号:US2988631A
公开(公告)日:1961-06-13
申请号:US81967859
申请日:1959-06-11
Applicant: BELL TELEPHONE LABOR INC
Inventor: HERSHEY HAROLD J , JORDAN HOMER G , RESTALL JR WILLIAM E
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