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公开(公告)号：US3430202A
公开(公告)日：1969-02-25
申请号：US3430202D
申请日：1964-10-07
Applicant: BELL TELEPHONE LABOR INC
Inventor： DOWNING RANDALL W , HASS RONALD J
CPC classification number: G06F9/30018 , G06F9/30032 , G06F9/30167
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