-
公开(公告)号:US2890376A
公开(公告)日:1959-06-09
申请号:US52084655
申请日:1955-07-08
Applicant: PHILIPS CORP
IPC: H01J31/12
CPC classification number: H01J31/123 , H01J31/124
-
-
公开(公告)号:US2982874A
公开(公告)日:1961-05-02
申请号:US69429957
申请日:1957-11-04
Applicant: PHILIPS CORP
Inventor: DOORN ADRIAAN GERARD VAN
IPC: H04N9/26
CPC classification number: H04N9/26
-
-