FR779734A - Improvements to cathode ray lamps - Google Patents

Improvements to cathode ray lamps

Info

Publication number
FR779734A
FR779734A FR779734DA FR779734A FR 779734 A FR779734 A FR 779734A FR 779734D A FR779734D A FR 779734DA FR 779734 A FR779734 A FR 779734A
Authority
FR
France
Prior art keywords
cathode ray
ray lamps
lamps
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.)
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
Priority claimed from GB2719933A external-priority patent/GB431327A/en
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority claimed from US745838A external-priority patent/US2119119A/en
Application granted granted Critical
Publication of FR779734A publication Critical patent/FR779734A/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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
FR779734D 1933-10-03 1934-09-28 Improvements to cathode ray lamps Expired FR779734A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB2719933A GB431327A (en) 1933-10-03 1933-10-03 Improvements in or relating to discharge devices such as cathode ray tubes
US745838A US2119119A (en) 1933-10-03 1934-09-28 Cathode ray tube
US165496A US2178973A (en) 1933-10-03 1937-09-24 Cathode ray tube

Publications (1)

Publication Number Publication Date
FR779734A true FR779734A (en) 1935-04-11

Family

ID=32073928

Family Applications (1)

Application Number Title Priority Date Filing Date
FR779734D Expired FR779734A (en) 1933-10-03 1934-09-28 Improvements to cathode ray lamps

Country Status (4)

Country Link
US (1) US2178973A (en)
BE (1) BE405481A (en)
DE (1) DE762701C (en)
FR (1) FR779734A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567874A (en) * 1948-08-28 1951-09-11 Cage Projects Inc Cathode-ray tube
DE1514919A1 (en) * 1966-01-28 1969-06-26 Telefunken Patent Cathode ray tube
US3950667A (en) * 1973-07-03 1976-04-13 Hughes Aircraft Company Magnetic deflection cathode ray tube system with electron gun having focus structure of a deposited resistive material

Also Published As

Publication number Publication date
BE405481A (en)
DE762701C (en) 1951-12-06
US2178973A (en) 1939-11-07

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