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公开(公告)号：US2512327A
公开(公告)日：1950-06-20
申请号：US59038445
申请日：1945-04-26
Applicant: STANDARD OIL DEV CO
Inventor： HAWES TRUMAN P , GIRAITIS ALBERT P
IPC: C01B17/92
CPC classification number: C01B17/925
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