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公开(公告)号:US2888594A
公开(公告)日:1959-05-26
申请号:US65491057
申请日:1957-04-24
Applicant: BELL TELEPHONE LABOR INC
Inventor: MOSTER CLARENCE R , ST JOHN GRANT E
IPC: H01J25/38
CPC classification number: H01J25/38
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公开(公告)号:US2797353A
公开(公告)日:1957-06-25
申请号:US23178351
申请日:1951-06-15
Applicant: BELL TELEPHONE LABOR INC
Inventor: MOLNAR JULIUS P , MOSTER CLARENCE R
IPC: H01J23/087
CPC classification number: H01J23/087
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