FR1106548A - Improvements to cathode structures for electron tubes - Google Patents

Improvements to cathode structures for electron tubes

Info

Publication number
FR1106548A
FR1106548A FR1106548DA FR1106548A FR 1106548 A FR1106548 A FR 1106548A FR 1106548D A FR1106548D A FR 1106548DA FR 1106548 A FR1106548 A FR 1106548A
Authority
FR
France
Prior art keywords
electron tubes
cathode structures
cathode
structures
tubes
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 FR1106548A publication Critical patent/FR1106548A/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
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/485—Construction of the gun or of parts thereof
FR1106548D 1953-08-19 1954-08-18 Improvements to cathode structures for electron tubes Expired FR1106548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2281753A GB773580A (en) 1953-08-19 1953-08-19 Improvements in or relating to cathode structures for electron discharge devices

Publications (1)

Publication Number Publication Date
FR1106548A true FR1106548A (en) 1955-12-20

Family

ID=10185522

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1106548D Expired FR1106548A (en) 1953-08-19 1954-08-18 Improvements to cathode structures for electron tubes

Country Status (2)

Country Link
FR (1) FR1106548A (en)
GB (1) GB773580A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942137A (en) * 1957-11-18 1960-06-21 Gen Electric Cathode sleeve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204141A (en) * 1962-08-20 1965-08-31 Kentucky Electronics Inc Electron gun
US6294105B1 (en) 1997-12-23 2001-09-25 International Business Machines Corporation Chemical mechanical polishing slurry and method for polishing metal/oxide layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942137A (en) * 1957-11-18 1960-06-21 Gen Electric Cathode sleeve

Also Published As

Publication number Publication date
GB773580A (en) 1957-05-01

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