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
GB14538/38A
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.)
Ver Gluehlampen & Elek AG
Original Assignee
Ver Gluehlampen & Elek AG
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 Ver Gluehlampen & Elek AGfiledCriticalVer Gluehlampen & Elek AG
Publication of GB496864ApublicationCriticalpatent/GB496864A/en
H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J2893/00—Discharge tubes and lamps
H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
H01J2893/0012—Constructional arrangements
H01J2893/0019—Chemical composition and manufacture
H01J2893/002—Chemical composition and manufacture chemical
Landscapes
Vessels And Coating Films For Discharge Lamps
(AREA)
Abstract
496,864. Electrodeposition of gold; electric discharge tubes. VEREINIGTE GLUHLAMPEN UND ELEKTRIZITATS AKT.-GES. May 16, 1938, No. 14538. Convention date, May 15, 1937. [Class 41] [Also in Group XL] The grid of an electric discharge tube is electroplated with several thin layers of gold, the grid being heated to about 1000‹ C. in an inert gas after application of each layer to expel gas.
GB14538/38A1937-05-151938-05-16Process for gilding grids for electric discharge tubes
ExpiredGB496864A
(en)
Method of the hydrogenation of compounds of the cyclopentano dimethylpoydrophenenthrene series containing keto groups to compounds of the cyclopentanodimethylpolyhydrophenanthrene
Method of the hydrogenation of compounds of the cyclopentano dimethylpoydrophenenthrene series containing keto groups to compounds of the cyclopentanodimethylpolyhydrophenanthrene
Improvements in or relating to incandescent cathodes for use in gas or vapour-filled discharge tubes and constituted by directly heated and parallel-connected individual elements