FR2170208B1 - - Google Patents

Info

Publication number
FR2170208B1
FR2170208B1 FR7303741A FR7303741A FR2170208B1 FR 2170208 B1 FR2170208 B1 FR 2170208B1 FR 7303741 A FR7303741 A FR 7303741A FR 7303741 A FR7303741 A FR 7303741A FR 2170208 B1 FR2170208 B1 FR 2170208B1
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
FR7303741A
Other languages
French (fr)
Other versions
FR2170208A1 (ja
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
Publication of FR2170208A1 publication Critical patent/FR2170208A1/fr
Application granted granted Critical
Publication of FR2170208B1 publication Critical patent/FR2170208B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/38—Control electrodes, e.g. grid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0015—Non-sealed electrodes
    • H01J2893/0017—Cylindrical, helical or annular grids
FR7303741A 1972-02-05 1973-02-02 Expired FR2170208B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7201534A NL7201534A (ja) 1972-02-05 1972-02-05

Publications (2)

Publication Number Publication Date
FR2170208A1 FR2170208A1 (ja) 1973-09-14
FR2170208B1 true FR2170208B1 (ja) 1977-08-26

Family

ID=19815300

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7303741A Expired FR2170208B1 (ja) 1972-02-05 1973-02-02

Country Status (8)

Country Link
US (1) US3806754A (ja)
JP (1) JPS4889674A (ja)
CA (1) CA975418A (ja)
CH (1) CH552282A (ja)
DE (1) DE2303776C3 (ja)
FR (1) FR2170208B1 (ja)
GB (1) GB1368542A (ja)
NL (1) NL7201534A (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976909A (en) * 1975-07-11 1976-08-24 Rca Corporation Wire mesh cathode

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2277148A (en) * 1941-01-30 1942-03-24 Bell Telephone Labor Inc Electrode for electron discharge devices
NL88786C (ja) * 1955-04-02
US3172002A (en) * 1960-11-21 1965-03-02 Rca Corp Cathode mount and method of fabrication
JPS4329650Y1 (ja) * 1965-11-15 1968-12-05

Also Published As

Publication number Publication date
DE2303776B2 (de) 1977-12-15
FR2170208A1 (ja) 1973-09-14
NL7201534A (ja) 1973-08-07
GB1368542A (en) 1974-09-25
CA975418A (en) 1975-09-30
DE2303776A1 (de) 1973-08-09
DE2303776C3 (de) 1978-08-10
JPS4889674A (ja) 1973-11-22
US3806754A (en) 1974-04-23
CH552282A (de) 1974-07-31

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Legal Events

Date Code Title Description
ST Notification of lapse