FR676382A - Procédé de fabrication de cathodes - Google Patents

Procédé de fabrication de cathodes

Info

Publication number
FR676382A
FR676382A FR676382DA FR676382A FR 676382 A FR676382 A FR 676382A FR 676382D A FR676382D A FR 676382DA FR 676382 A FR676382 A FR 676382A
Authority
FR
France
Prior art keywords
manufacturing process
cathode manufacturing
cathode
manufacturing
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR676382A publication Critical patent/FR676382A/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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y10T428/2958—Metal or metal compound in coating

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
FR676382D 1928-06-09 1929-06-08 Procédé de fabrication de cathodes Expired FR676382A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1849594X 1928-06-09

Publications (1)

Publication Number Publication Date
FR676382A true FR676382A (fr) 1930-02-21

Family

ID=7745941

Family Applications (1)

Application Number Title Priority Date Filing Date
FR676382D Expired FR676382A (fr) 1928-06-09 1929-06-08 Procédé de fabrication de cathodes

Country Status (2)

Country Link
US (1) US1849594A (fr)
FR (1) FR676382A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505909A (en) * 1948-02-26 1950-05-02 Bishop H Russell Cathode-ray tube with oxide coated cathode
US2661336A (en) * 1948-11-17 1953-12-01 Rca Corp Getter material for electron discharge devices
US3842469A (en) * 1971-11-19 1974-10-22 Itt Method of activating electron emissive electrodes
DE102020006598A1 (de) 2020-10-27 2022-04-28 Technische Universität Bergakademie Freiberg, Körperschaft des öffentlichen Rechts Feuerfester Keramikwerkstoff auf der Basis von La2O3 und Verfahren zu seiner Herstellung

Also Published As

Publication number Publication date
US1849594A (en) 1932-03-15

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