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公开(公告)号：US2983581A
公开(公告)日：1961-05-09
申请号：US62654856
申请日：1956-12-05
Applicant: OLIN MATHIESON
Inventor： DE ACETIS WILLIAM , TROTZ SAMUEL I
CPC classification number: C01B6/00 , C01B35/026
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