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公开(公告)号：US2697723A
公开(公告)日：1954-12-21
申请号：US29581852
申请日：1952-06-26
Applicant: CALIFORNIA RESEARCH CORP
Inventor： CARLSTON EARL F , LUM FUNSTON G
IPC: C07C51/42
CPC classification number: C07C51/42
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