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公开(公告)号：US1695226A
公开(公告)日：1928-12-11
申请号：US71700624
申请日：1924-05-31
Applicant: PHILIPS NV
Inventor： CORNELIS BOL
IPC: H01J19/34
CPC classification number: H01J19/34 , H01J2893/0003
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公开(公告)号：US1819146A
公开(公告)日：1931-08-18
申请号：US11909326
申请日：1926-06-28
Applicant: PHILIPS NV
Inventor： CORNELIS BOL
IPC: H01J1/18
CPC classification number: H01J1/18
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公开(公告)号：US1734809A
公开(公告)日：1929-11-05
申请号：US63893123
申请日：1923-05-14
Applicant: PHILIPS NV
Inventor： GILLES HOLST , JAN BERGMANS , CORNELIS BOL
CPC classification number: H01K3/20 , H01J5/42 , H01J5/46 , H01J9/247 , H01J2893/0034 , Y10T403/21
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