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公开(公告)号：US3292572A
公开(公告)日：1966-12-20
申请号：US33755564
申请日：1964-01-14
Applicant: BAYER AG
Inventor： UDO BRENNEISEN , GERHARD HEYL , HEINRICH MARUSCZYK
CPC classification number: G03G15/102 , G03G15/101 , G03G15/28
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