FR809079A - Improvements to cathode ray oscillographs - Google Patents

Improvements to cathode ray oscillographs

Info

Publication number
FR809079A
FR809079A FR809079DA FR809079A FR 809079 A FR809079 A FR 809079A FR 809079D A FR809079D A FR 809079DA FR 809079 A FR809079 A FR 809079A
Authority
FR
France
Prior art keywords
cathode ray
ray oscillographs
oscillographs
cathode
ray
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Application granted granted Critical
Publication of FR809079A publication Critical patent/FR809079A/en
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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/481—Electron guns using field-emission, photo-emission, or secondary-emission electron source
FR809079D 1935-11-15 1935-11-15 Improvements to cathode ray oscillographs Expired FR809079A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR809079T 1935-11-15

Publications (1)

Publication Number Publication Date
FR809079A true FR809079A (en) 1937-02-23

Family

ID=9253346

Family Applications (1)

Application Number Title Priority Date Filing Date
FR809079D Expired FR809079A (en) 1935-11-15 1935-11-15 Improvements to cathode ray oscillographs

Country Status (4)

Country Link
US (1) US2175582A (en)
BE (1) BE417525A (en)
FR (1) FR809079A (en)
GB (2) GB479270A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644031A (en) * 1949-04-22 1953-06-30 Time Inc Scanning device
US2825838A (en) * 1953-06-04 1958-03-04 Csf Electron sources
US3311774A (en) * 1964-03-23 1967-03-28 Westinghouse Electric Corp Electron discharge device having a rotatable cathode therein
US3364373A (en) * 1964-03-23 1968-01-16 Westinghouse Electric Corp Electron discharge device having a cathode element with a renewable electron emissive surface
US3290540A (en) * 1964-04-16 1966-12-06 Westinghouse Electric Corp Electron discharge tube having a movable cathode tape

Also Published As

Publication number Publication date
GB479226A (en) 1938-02-02
BE417525A (en)
US2175582A (en) 1939-10-10
GB479270A (en) 1938-02-02

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