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公开(公告)号：US3515761A
公开(公告)日：1970-06-02
申请号：US3515761D
申请日：1968-06-19
Applicant: SINCLAIR RESEARCH INC
Inventor： HOFFMAN WILLIAM D , YOO JIN SUN
CPC classification number: C07C1/28 , C07C2601/02 , C07C13/04
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