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公开(公告)号：US2056861A
公开(公告)日：1936-10-06
申请号：US65937433
申请日：1933-03-02
Applicant: PHILIPS NV
Inventor： JOSEPHUS MAARTENS JOHANNES HEN , MAASTRICHT JACOB VAN
IPC: H01J5/42
CPC classification number: H01J5/42 , H01J2893/0034 , Y10T403/479
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公开(公告)号：US2051457A
公开(公告)日：1936-08-18
申请号：US64472432
申请日：1932-11-28
Applicant: PHILIPS NV
IPC: H01J1/00
CPC classification number: H01J1/00 , H01J2893/0051
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