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公开(公告)号：US2426198A
公开(公告)日：1947-08-26
申请号：US45779142
申请日：1942-09-09
Applicant: STANDARD TELEPHONES CABLES LTD
Inventor： DOUGLAS GOODCHILD FRANK , HARRY WOLSEY WILLEM
IPC: H01J21/36
CPC classification number: H01J21/36
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公开(公告)号：US2428020A
公开(公告)日：1947-09-30
申请号：US45779042
申请日：1942-09-09
Applicant: STANDARD TELEPHONES CABLES LTD
Inventor： DOUGLAS GOODCHILD FRANK , HARRY WOLSEY WILLEM
IPC: H01J21/36
CPC classification number: H01J21/36
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