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
GB5180/32A
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.)
Claude Lumiere SA Pour Les App
Original Assignee
Claude Lumiere SA Pour Les App
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 Claude Lumiere SA Pour Les AppfiledCriticalClaude Lumiere SA Pour Les App
Publication of GB398830ApublicationCriticalpatent/GB398830A/en
H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/02—Details
H01J17/04—Electrodes; Screens
H01J17/06—Cathodes
H01J17/066—Cold cathodes
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2893/00—Discharge tubes and lamps
H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
H01J2893/0065—Electrode systems
H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
Landscapes
Discharge Lamp
(AREA)
Abstract
398,830. Discharge lamps. CLAUDELUMIERE SOC. ANON. POUR LES APPLICATIONS DES JAZRARES A LA LUMI’RE-PROC•D•S G. CLAUDE, 8, Rue Cognac Jay, Paris. Feb. 22, 1932, No. 5180. Convention date, Dec. 19, 1931. Addition to 393,308. [Class 39 (i).] The open hollow electrode coated with a dielectric on the edge of its rim only, which is described in the parent Specification, is covered with a material such as an alkaline earth metal or an oxide, peroxide or suboxide of a rare earth which gives rise to a cathodic drop of less than twenty volts.
GB5180/32A1931-12-191932-02-22Improvements in or relating to electric discharge lamps
ExpiredGB398830A
(en)
Improvements in methods of applying luminescent substances to the surface of a vitreous body, other than the envelope of a luminous electric discharge lamp or tube