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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19681639433external-prioritypatent/DE1639433A1/de
Application filed by Alcatel Espana SAfiledCriticalAlcatel Espana SA
Publication of ES362945A1publicationCriticalpatent/ES362945A1/es
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
H01J1/15—Cathodes heated directly by an electric current
H01J1/16—Cathodes heated directly by an electric current characterised by the shape
Landscapes
Cathode-Ray Tubes And Fluorescent Screens For Display
(AREA)
ES362945A1968-01-261969-01-25Catodo helicoidal para tubos de rayos electronicos.
ExpiredES362945A1
(es)