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公开(公告)号：US3301958A
公开(公告)日：1967-01-31
申请号：US30147963
申请日：1963-08-12
Applicant: WESTERN ELECTRIC CO
Inventor： BLAKESLEE WILLIAM W , GRUNFELDER PHILIP J , NADOLNY EDMUND K , SEVEBECK LAURIN L , VOGELI RUDOLF E
IPC: H04M1/276
CPC classification number: H04M1/276
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