FR2197234B3 - - Google Patents

Info

Publication number
FR2197234B3
FR2197234B3 FR7330648A FR7330648A FR2197234B3 FR 2197234 B3 FR2197234 B3 FR 2197234B3 FR 7330648 A FR7330648 A FR 7330648A FR 7330648 A FR7330648 A FR 7330648A FR 2197234 B3 FR2197234 B3 FR 2197234B3
Authority
FR
France
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
FR7330648A
Other versions
FR2197234A1 (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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve Co 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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Publication of FR2197234A1 publication Critical patent/FR2197234A1/fr
Application granted granted Critical
Publication of FR2197234B3 publication Critical patent/FR2197234B3/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
FR7330648A 1972-08-23 1973-08-23 Expired FR2197234B3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3916972A GB1383033A (en) 1972-08-23 1972-08-23 Vacuum tubes

Publications (2)

Publication Number Publication Date
FR2197234A1 FR2197234A1 (fr) 1974-03-22
FR2197234B3 true FR2197234B3 (fr) 1976-07-30

Family

ID=10408051

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7330648A Expired FR2197234B3 (fr) 1972-08-23 1973-08-23

Country Status (5)

Country Link
AU (1) AU5892373A (fr)
DE (1) DE2341481A1 (fr)
FR (1) FR2197234B3 (fr)
GB (1) GB1383033A (fr)
IT (1) IT994591B (fr)

Also Published As

Publication number Publication date
IT994591B (it) 1975-10-20
FR2197234A1 (fr) 1974-03-22
GB1383033A (en) 1975-02-05
AU5892373A (en) 1975-02-06
DE2341481A1 (de) 1974-03-21

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Legal Events

Date Code Title Description
ST Notification of lapse