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1.Electric discharge device having a low impedance at acoustic frequencies 失效
Title translation: 在声频频率下具有低阻抗的放电装置公开(公告)号:US2988664A
公开(公告)日:1961-06-13
申请号:US82157859
申请日:1959-06-19
Applicant: PHILIPS CORP
Inventor: MARIE AHSMANN GERARDUS JOSEPHU , JAN OSKAM HENDRIK
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2.Gaseous glow-discharge tube with monocrystalline metal cathode 失效
Title translation: 具有单晶金属阴极的气体辉光放电管公开(公告)号:US3209197A
公开(公告)日:1965-09-28
申请号:US4803760
申请日:1960-08-08
Applicant: PHILIPS CORP
Inventor: MARIE AHSMANN GERARDUS JOSEPHU , GELDER ZEGER VAN
CPC classification number: H01J17/066 , H01J17/40 , H01J17/44 , H01J2893/0066 , H01J2893/0068
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公开(公告)号:US3020436A
公开(公告)日:1962-02-06
申请号:US2831660
申请日:1960-05-11
Applicant: PHILIPS CORP
Inventor: MARIE AHSMANN GERARDUS JOSEPHU
IPC: H01J17/06
CPC classification number: H01J17/066 , H01J2893/0066
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公开(公告)号:US2864024A
公开(公告)日:1958-12-09
申请号:US54356355
申请日:1955-10-28
Applicant: PHILIPS CORP
Inventor: MARIE AHSMANN GERARDUS JOSEPHU
IPC: H01J17/48
CPC classification number: H01J17/48
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