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公开(公告)号:US1992493A
公开(公告)日:1935-02-26
申请号:US58045731
申请日:1931-12-11
Applicant: PHILIPS NV
Inventor: BASTIAAN LOS CORNELIS
IPC: H01J17/58
CPC classification number: H01J17/58
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公开(公告)号:US2162850A
公开(公告)日:1939-06-20
申请号:US15062337
申请日:1937-06-26
Applicant: PHILIPS NV
Inventor: HENDRIK LEMS , BASTIAAN LOS CORNELIS
CPC classification number: B21B39/002 , B65H3/0816 , H01J13/12 , H01J2893/008 , Y10S428/926 , Y10T428/12812 , Y10T428/12875 , Y10T428/12944
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