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公开(公告)号：US2500637A
公开(公告)日：1950-03-14
申请号：US67374246
申请日：1946-06-01
Applicant: BELL TELEPHONE LABOR INC
Inventor： KINZER JOHN P
CPC classification number: H03B5/1835 , H01J25/24
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公开(公告)号：US2500417A
公开(公告)日：1950-03-14
申请号：US58820245
申请日：1945-04-13
Applicant: BELL TELEPHONE LABOR INC
Inventor： KINZER JOHN P
IPC: H01P7/06
CPC classification number: H01P7/06
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