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公开(公告)号：US2873516A
公开(公告)日：1959-02-17
申请号：US45587254
申请日：1954-09-14
Applicant: WESTERN ELECTRIC CO
Inventor： MCCAIN CECIL C , GLEN ELLYN , EMIL SIRP
IPC: H01J23/10
CPC classification number: H01J23/10 , Y10T29/53243 , Y10T29/5397
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