GB976012A - Improvements relating to heating filaments for indirectly-heated cathodes for electron tubes - Google Patents

Improvements relating to heating filaments for indirectly-heated cathodes for electron tubes

Info

Publication number
GB976012A
GB976012A GB4795262A GB4795262A GB976012A GB 976012 A GB976012 A GB 976012A GB 4795262 A GB4795262 A GB 4795262A GB 4795262 A GB4795262 A GB 4795262A GB 976012 A GB976012 A GB 976012A
Authority
GB
United Kingdom
Prior art keywords
core
aluminium oxide
filament
coated
layer
Prior art date
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
GB4795262A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB976012A publication Critical patent/GB976012A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/08—Manufacture of heaters for indirectly-heated cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
GB4795262A 1961-12-22 1962-12-19 Improvements relating to heating filaments for indirectly-heated cathodes for electron tubes Expired GB976012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL272882 1961-12-22

Publications (1)

Publication Number Publication Date
GB976012A true GB976012A (en) 1964-11-25

Family

ID=19753496

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4795262A Expired GB976012A (en) 1961-12-22 1962-12-19 Improvements relating to heating filaments for indirectly-heated cathodes for electron tubes

Country Status (5)

Country Link
BE (1) BE626373A (de)
CH (1) CH423001A (de)
DE (1) DE1234859B (de)
GB (1) GB976012A (de)
NL (1) NL113095C (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2317446C3 (de) * 1973-04-06 1983-11-10 Standard Elektrik Lorenz Ag, 7000 Stuttgart Verfahren zum Herstellen eines Heizelementes für eine indirekt geheizte Kathode

Also Published As

Publication number Publication date
CH423001A (de) 1966-10-31
DE1234859B (de) 1967-02-23
BE626373A (de)
NL113095C (de)

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