FR2108725A5 - - Google Patents

Info

Publication number
FR2108725A5
FR2108725A5 FR7135172A FR7135172A FR2108725A5 FR 2108725 A5 FR2108725 A5 FR 2108725A5 FR 7135172 A FR7135172 A FR 7135172A FR 7135172 A FR7135172 A FR 7135172A FR 2108725 A5 FR2108725 A5 FR 2108725A5
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
FR7135172A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR2108725A5 publication Critical patent/FR2108725A5/fr
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
    • H01J1/15—Cathodes heated directly by an electric current
FR7135172A 1970-09-30 1971-09-30 Expired FR2108725A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7014337A NL7014337A (en) 1970-09-30 1970-09-30

Publications (1)

Publication Number Publication Date
FR2108725A5 true FR2108725A5 (en) 1972-05-19

Family

ID=19811188

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7135172A Expired FR2108725A5 (en) 1970-09-30 1971-09-30

Country Status (7)

Country Link
US (1) US3694688A (en)
JP (1) JPS5345667B1 (en)
CA (1) CA934433A (en)
DE (1) DE2144710C3 (en)
FR (1) FR2108725A5 (en)
GB (1) GB1302140A (en)
NL (1) NL7014337A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108770A (en) * 1976-03-09 1977-09-12 Hitachi Ltd Manufacture for direct heat type cathode
JPS536560A (en) * 1976-07-07 1978-01-21 Hitachi Ltd Manufacture of cathode for direct heating type cathode ray tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441767A (en) * 1967-02-01 1969-04-29 Sylvania Electric Prod Tensioned directly heated cathode having improved temperature characteristics
US3440474A (en) * 1967-02-01 1969-04-22 Sylvania Electric Prod Resilient means for supporting a directly heated planar cathode

Also Published As

Publication number Publication date
DE2144710C3 (en) 1978-12-14
DE2144710B2 (en) 1978-03-23
GB1302140A (en) 1973-01-04
CA934433A (en) 1973-09-25
JPS5345667B1 (en) 1978-12-08
US3694688A (en) 1972-09-26
DE2144710A1 (en) 1972-04-06
NL7014337A (en) 1972-04-05

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Legal Events

Date Code Title Description
ST Notification of lapse