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1.发明授权
公开(公告)号：US2545186A
公开(公告)日：1951-03-13
申请号：US75197047
申请日：1947-06-02
Applicant: SHELL DEV
Inventor： YATES WALLACE J , FOLEKEMER FRANK B , SIMANTON WILLIAM A
IPC: A01N25/30
CPC classification number: A01N25/30
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