FR1131224A - Process for manufacturing a hot cathode for electron tubes - Google Patents

Process for manufacturing a hot cathode for electron tubes

Info

Publication number
FR1131224A
FR1131224A FR1131224DA FR1131224A FR 1131224 A FR1131224 A FR 1131224A FR 1131224D A FR1131224D A FR 1131224DA FR 1131224 A FR1131224 A FR 1131224A
Authority
FR
France
Prior art keywords
manufacturing
hot cathode
electron tubes
tubes
electron
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)
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding 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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Application granted granted Critical
Publication of FR1131224A publication Critical patent/FR1131224A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Discharge Lamp (AREA)
FR1131224D 1954-09-08 1955-09-07 Process for manufacturing a hot cathode for electron tubes Expired FR1131224A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH806032X 1954-09-08

Publications (1)

Publication Number Publication Date
FR1131224A true FR1131224A (en) 1957-02-19

Family

ID=4538064

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1131224D Expired FR1131224A (en) 1954-09-08 1955-09-07 Process for manufacturing a hot cathode for electron tubes

Country Status (4)

Country Link
CH (1) CH323755A (en)
DE (1) DE1014235B (en)
FR (1) FR1131224A (en)
GB (1) GB806032A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3151347C1 (en) * 1981-12-24 1983-05-05 Standard Elektrik Lorenz Ag, 7000 Stuttgart Process for forming glow cathodes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE443323C (en) * 1923-01-12 1927-04-26 Philips Nv Process for the manufacture of oxide cathodes
US2543439A (en) * 1945-05-02 1951-02-27 Edward A Coomes Method of manufacturing coated elements for electron tubes

Also Published As

Publication number Publication date
CH323755A (en) 1957-08-15
DE1014235B (en) 1957-08-22
GB806032A (en) 1958-12-17

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