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公开(公告)号：US2645639A
公开(公告)日：1953-07-14
申请号：US66188246
申请日：1946-04-12
Applicant: RCA CORP
Inventor： BROWN GEORGE H , MORRISON WENDELL C , FLOSDORF EARL W
IPC: C07D499/16
CPC classification number: C07D499/16
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