GB388046A - Improvements in the introduction of chemically active substances into vacuum tubes - Google Patents

Improvements in the introduction of chemically active substances into vacuum tubes

Info

Publication number
GB388046A
GB388046A GB22616/31A GB2261631A GB388046A GB 388046 A GB388046 A GB 388046A GB 22616/31 A GB22616/31 A GB 22616/31A GB 2261631 A GB2261631 A GB 2261631A GB 388046 A GB388046 A GB 388046A
Authority
GB
United Kingdom
Prior art keywords
introduction
mixture
active substances
chemically active
vacuum tubes
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
GB22616/31A
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.)
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 NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB388046A publication Critical patent/GB388046A/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
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/395—Filling vessels
    • 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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
GB22616/31A 1930-11-18 1931-08-10 Improvements in the introduction of chemically active substances into vacuum tubes Expired GB388046A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL388046X 1930-11-18

Publications (1)

Publication Number Publication Date
GB388046A true GB388046A (en) 1933-02-10

Family

ID=19785739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22616/31A Expired GB388046A (en) 1930-11-18 1931-08-10 Improvements in the introduction of chemically active substances into vacuum tubes

Country Status (3)

Country Link
FR (1) FR726260A (es)
GB (1) GB388046A (es)
NL (1) NL36936C (es)

Also Published As

Publication number Publication date
NL36936C (es)
FR726260A (fr) 1932-05-26

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