Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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Publication date
Application filed by Siemens and Halske AG, Siemens AGfiledCriticalSiemens and Halske AG
Application grantedgrantedCritical
Publication of FR1102723ApublicationCriticalpatent/FR1102723A/en
H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
H01J1/02—Main electrodes
H01J1/13—Solid thermionic cathodes
H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
H01J1/28—Dispenser-type cathodes, e.g. L-cathode
FR1102723D1953-06-181954-06-18
electron-emitting electrodes for electric discharge vessels
ExpiredFR1102723A
(en)