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公开(公告)号：US2184952A
公开(公告)日：1939-12-26
申请号：US20519238
申请日：1938-04-30
Applicant: STANDARD OIL DEV CO
Inventor： ZIMMER JOHN C , CRUTCHFIELD JACK B
IPC: C09D195/00
CPC classification number: C09D195/00
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