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公开(公告)号：US2872355A
公开(公告)日：1959-02-03
申请号：US41239654
申请日：1954-02-24
Applicant: BAYER AG
Inventor： MULLER KARL W , DETLEF DELFS
IPC: B27K3/52 , D06M15/433 , G11B15/46
CPC classification number: D06M15/433 , D21H5/0002 , G11B15/46 , Y10S428/921
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