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公开(公告)号：US2948739A
公开(公告)日：1960-08-09
申请号：US63332457
申请日：1957-01-09
Applicant: ALLIED CHEM
Inventor： HARRIS ROBERT L , OLSEN DOUGLAS R
IPC: C01B15/023
CPC classification number: C01B15/023
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