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公开(公告)号：US3346323A
公开(公告)日：1967-10-10
申请号：US33859064
申请日：1964-01-20
Applicant: BAYER AG
Inventor： HEINRICH SPAHRKAS , BERGISCH NEUKIRCHEN , HERBERT KNOPF , KURT FABER , GUSTAV MAUTHE
IPC: C14C3/06
CPC classification number: C14C3/06
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