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.)
Expired
Application number
GB21790/31A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Publication of GB375112ApublicationCriticalpatent/GB375112A/en
H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
H01J2893/0012—Constructional arrangements
H01J2893/0015—Non-sealed electrodes
Landscapes
Solid Thermionic Cathode
(AREA)
Abstract
375,112. Thermionic valves. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. July 30, 1931, No. 21790. Convention date, Nov. 21,1930. [Class 39 (i).] A grid consists of wire 16, preferably of nickel, wound or a core 15 preferably of tungsten or molybdenum, the whole secured to two or more supports 5. The con struction increases the heat-radiating surface of the grid.
GB21790/31A1930-11-211931-07-30Improvements relating to electron discharge tubes or thermionic valves
ExpiredGB375112A
(en)