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公开(公告)号：US1610316A
公开(公告)日：1926-12-04
申请号：US44823221
申请日：1921-02-26
Applicant: RCA CORP
Inventor： QUILTER WILLIAM ALFRED EDWARD
CPC classification number: H01J21/08 , H01J19/38 , H01J2893/0015
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