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公开(公告)号：US2641569A
公开(公告)日：1953-06-09
申请号：US30012452
申请日：1952-07-21
Applicant: SHELL DEV
Inventor： MARTIN MAZEE WILLEM , BARTA SWART ANNA
IPC: C10G73/36
CPC classification number: C10G73/36
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