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公开(公告)号：US2579021A
公开(公告)日：1951-12-18
申请号：US75845847
申请日：1947-07-01
Applicant: SHELL DEV
Inventor： BREZESINSKA SMITHUYSEN WILHELM , EERBEEK COENRAAD D F
IPC: C07C45/30
CPC classification number: C07C45/30
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