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1.发明授权
公开(公告)号：US2770614A
公开(公告)日：1956-11-13
申请号：US22836451
申请日：1951-05-25
Applicant: BRITISH CELANESE
Inventor： HEATON HOWARTH THOMAS , JOHN DOWNING , NAPIER DREWITT JAMES GORDON
IPC: C08F240/00
CPC classification number: C08F240/00
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