FR1059489A - Cathode improvements for electron tubes - Google Patents

Cathode improvements for electron tubes

Info

Publication number
FR1059489A
FR1059489A FR1059489DA FR1059489A FR 1059489 A FR1059489 A FR 1059489A FR 1059489D A FR1059489D A FR 1059489DA FR 1059489 A FR1059489 A FR 1059489A
Authority
FR
France
Prior art keywords
cathode
electron tubes
tubes
electron
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
French (fr)
Inventor
Henri Figour
Charles Biguenet
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications 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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Application granted granted Critical
Publication of FR1059489A publication Critical patent/FR1059489A/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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
FR1059489D 1952-07-04 1952-07-04 Cathode improvements for electron tubes Expired FR1059489A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1059489T 1952-07-04

Publications (1)

Publication Number Publication Date
FR1059489A true FR1059489A (en) 1954-03-25

Family

ID=9599112

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1059489D Expired FR1059489A (en) 1952-07-04 1952-07-04 Cathode improvements for electron tubes

Country Status (3)

Country Link
BE (1) BE523896A (en)
FR (1) FR1059489A (en)
NL (1) NL87232C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057231B (en) * 1956-03-03 1959-05-14 Patra Patent Treuhand Activated glow electrode for electric discharge lamps

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057231B (en) * 1956-03-03 1959-05-14 Patra Patent Treuhand Activated glow electrode for electric discharge lamps

Also Published As

Publication number Publication date
NL87232C (en)
BE523896A (en)

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