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公开(公告)号：US1906399A
公开(公告)日：1933-05-02
申请号：US40205629
申请日：1929-10-24
Applicant: STANDARD OIL CO
Inventor： MONTGOMERY SAMUEL A , HUBBARD JOHN A
IPC: C01B17/88
CPC classification number: C01B17/88 , Y10S159/19
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