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公开(公告)号：US2460062A
公开(公告)日：1949-01-25
申请号：US63032045
申请日：1945-11-23
Applicant: PHILCO CORP
Inventor： CHARTON PAUL W
IPC: H01J19/00
CPC classification number: H01J19/00 , H01J2893/001
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