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公开(公告)号：US2404447A
公开(公告)日：1946-07-23
申请号：US48345643
申请日：1943-04-17
Applicant: STANDARD OIL DEV CO
Inventor： MARANCIK JOSEPH V , MACCLYMONT DAVID B
IPC: F16L51/02
CPC classification number: F16L51/027
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