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公开(公告)号：US3022003A
公开(公告)日：1962-02-20
申请号：US78175558
申请日：1958-12-19
Applicant: BELL TELEPHONE LABOR INC
Inventor： GARRISON RICHARD F , SAAL FREDERICK A
IPC: H03K21/00
CPC classification number: H03K21/00
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