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公开(公告)号：US2871103A
公开(公告)日：1959-01-27
申请号：US39986853
申请日：1953-12-23
Applicant: SHELL DEV
Inventor： SKINNER JOHN R , STINLE SHELTON E
IPC: C01B15/026
CPC classification number: C01B15/026
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