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公开(公告)号：US2609882A
公开(公告)日：1952-09-09
申请号：US18262250
申请日：1950-08-31
Applicant: STANDARD OIL DEV CO
Inventor： MORGAN BRYAN E , DUMBAULD GEORGE K
IPC: C04B14/02
CPC classification number: C04B14/022
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