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
GB19054/27A
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.)
Individual
Original Assignee
Individual
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 IndividualfiledCriticalIndividual
Publication of GB274509ApublicationCriticalpatent/GB274509A/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
H01J1/14—Solid thermionic cathodes characterised by the material
Landscapes
Analysing Materials By The Use Of Radiation
(AREA)
Abstract
274,509. Loewe, S. July 19, 1926, [Convention date]. Vacuum tubes.- Incandescent cathodes of rectifiers and other electron discharge tubes comprise a coating of metal oxides or other substances with high emission applied to a platinum or platinum-iridium coating on a core of or containing iron. Known sealing-in wires may be used and coated with oxide. The Specification as open to inspection under Sect. 91 (3) (a), comprises also cores of chromenickel coated with platinum or platinum-iridium and then with oxides. This subject-matter does not appear in the Specification as accepted.
GB19054/27A1926-07-191927-07-18Incandescent cathode for electron discharge tubes
ExpiredGB274509A
(en)