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公开(公告)号：US2086130A
公开(公告)日：1937-07-06
申请号：US10438436
申请日：1936-10-07
Applicant: BELL TELEPHONE LABOR INC
Inventor： HICKMAN CLARENCE N , JACKSON HEIGHTS , MALLINA RUDOLPH F
IPC: G11B5/00
CPC classification number: G11B5/00
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