FR953992A - Perfectionnements aux cathodes pour tubes à vide - Google Patents

Perfectionnements aux cathodes pour tubes à vide

Info

Publication number
FR953992A
FR953992A FR953992DA FR953992A FR 953992 A FR953992 A FR 953992A FR 953992D A FR953992D A FR 953992DA FR 953992 A FR953992 A FR 953992A
Authority
FR
France
Prior art keywords
cathode
vacuum tubes
tubes
vacuum
cathode improvements
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
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.)
Umicore NV SA
Original Assignee
Ateliers de Constructions Electriques de Charleroi SA
ACEC SA
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 Ateliers de Constructions Electriques de Charleroi SA, ACEC SA filed Critical Ateliers de Constructions Electriques de Charleroi SA
Application granted granted Critical
Publication of FR953992A publication Critical patent/FR953992A/fr
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
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/32—Secondary emission electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/34—Photoemissive electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
FR953992D 1947-09-17 1947-09-17 Perfectionnements aux cathodes pour tubes à vide Expired FR953992A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR953992T 1947-09-17

Publications (1)

Publication Number Publication Date
FR953992A true FR953992A (fr) 1949-12-16

Family

ID=75947268

Family Applications (1)

Application Number Title Priority Date Filing Date
FR953992D Expired FR953992A (fr) 1947-09-17 1947-09-17 Perfectionnements aux cathodes pour tubes à vide

Country Status (2)

Country Link
BE (1) BE484001A (fr)
FR (1) FR953992A (fr)

Also Published As

Publication number Publication date
BE484001A (fr) 1948-08-14

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