FR971717A - Electric discharge device - Google Patents

Electric discharge device

Info

Publication number
FR971717A
FR971717A FR971717DA FR971717A FR 971717 A FR971717 A FR 971717A FR 971717D A FR971717D A FR 971717DA FR 971717 A FR971717 A FR 971717A
Authority
FR
France
Prior art keywords
discharge device
electric discharge
electric
discharge
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR971717A publication Critical patent/FR971717A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/34—Photo-emissive cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes
    • H01J40/06—Photo-emissive cathodes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
FR971717D 1946-06-29 1948-09-17 Electric discharge device Expired FR971717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1947946A GB615934A (en) 1946-06-29 1946-06-29 Improvements relating to electron-discharge devices

Publications (1)

Publication Number Publication Date
FR971717A true FR971717A (en) 1951-01-22

Family

ID=10130049

Family Applications (1)

Application Number Title Priority Date Filing Date
FR971717D Expired FR971717A (en) 1946-06-29 1948-09-17 Electric discharge device

Country Status (2)

Country Link
FR (1) FR971717A (en)
GB (1) GB615934A (en)

Also Published As

Publication number Publication date
GB615934A (en) 1949-01-13

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