FR875748A - Cathode for electric discharge tubes - Google Patents

Cathode for electric discharge tubes

Info

Publication number
FR875748A
FR875748A FR875748DA FR875748A FR 875748 A FR875748 A FR 875748A FR 875748D A FR875748D A FR 875748DA FR 875748 A FR875748 A FR 875748A
Authority
FR
France
Prior art keywords
cathode
electric discharge
discharge tubes
tubes
electric
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.)
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 FR875748A publication Critical patent/FR875748A/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)
FR875748D 1940-06-28 1941-10-04 Cathode for electric discharge tubes Expired FR875748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE875748X 1940-06-28

Publications (1)

Publication Number Publication Date
FR875748A true FR875748A (en) 1942-10-01

Family

ID=6817431

Family Applications (1)

Application Number Title Priority Date Filing Date
FR875748D Expired FR875748A (en) 1940-06-28 1941-10-04 Cathode for electric discharge tubes

Country Status (1)

Country Link
FR (1) FR875748A (en)

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