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公开(公告)号：US3135855A
公开(公告)日：1964-06-02
申请号：US9621961
申请日：1961-03-16
Applicant: ALLOYD ELECTRONICS CORP
Inventor： BARBER GEORGE F
IPC: H01J37/16
CPC classification number: H01J37/16 , Y10S164/05
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