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公开(公告)号：US2562163A
公开(公告)日：1951-07-31
申请号：US7899349
申请日：1949-03-01
Applicant: PHILIPS LAB INC
Inventor： HIENSCH JOHANNES N , BEERS JOHN R
IPC: H01J29/92
CPC classification number: H01J29/925
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公开(公告)号：US2510694A
公开(公告)日：1950-06-06
申请号：US119248
申请日：1948-01-08
Applicant: PHILIPS LAB INC
Inventor： GRIFFITHS LEIGHTON E , HIENSCH JOHANNES N
CPC classification number: H01G5/12
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