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公开(公告)号：US3505109A
公开(公告)日：1970-04-07
申请号：US3505109D
申请日：1966-09-27
Applicant: BASF AG
Inventor： SCHNELL GEORG , HARTMANN JOB-WERNER , STEUERWALD MANFRED , KITTLER WOLFRAM
CPC classification number: G11B5/702 , Y10S428/90 , Y10T428/31681
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