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1.发明授权
公开(公告)号：US2909532A
公开(公告)日：1959-10-20
申请号：US71476658
申请日：1958-02-12
Applicant: ALLIED CHEM
Inventor： COSBY JOHN N , HARRIS ROBERT L , SPOONER ALFRED B , TUTTLE JOHN R
IPC: C01B15/023
CPC classification number: C01B15/023
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