FR1555031A - - Google Patents

Info

Publication number
FR1555031A
FR1555031A FR1555031DA FR1555031A FR 1555031 A FR1555031 A FR 1555031A FR 1555031D A FR1555031D A FR 1555031DA FR 1555031 A FR1555031 A FR 1555031A
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
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 NL6701867A external-priority patent/NL154360B/xx
Priority claimed from NL686800278A external-priority patent/NL154047B/xx
Application filed filed Critical
Application granted granted Critical
Publication of FR1555031A publication Critical patent/FR1555031A/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
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • 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
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
FR1555031D 1967-02-08 1968-02-07 Expired FR1555031A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6701867A NL154360B (nl) 1967-02-08 1967-02-08 Elektrische ontladingsbuis met een kathode die in het inwendige activeringsmateriaal bevat, en kathode bestemd voor een dergelijke ontladingsbuis.
NL686800278A NL154047B (nl) 1968-01-09 1968-01-09 Elektrische ontladingsbuis met een kathode die in het inwendige activeringsmateriaal bevat, en kathode bestemd voor een dergelijke ontladingsbuis.

Publications (1)

Publication Number Publication Date
FR1555031A true FR1555031A (fr) 1969-01-24

Family

ID=26644145

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1555031D Expired FR1555031A (fr) 1967-02-08 1968-02-07

Country Status (3)

Country Link
CH (1) CH477756A (fr)
FR (1) FR1555031A (fr)
GB (1) GB1164413A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004424A1 (fr) * 1978-03-23 1979-10-03 Thorn Emi-Varian Limited Cathode thermoionique
EP0005279A2 (fr) * 1978-05-05 1979-11-14 BBC Aktiengesellschaft Brown, Boveri & Cie. Cathode chaude
FR2425144A1 (fr) * 1978-05-05 1979-11-30 Bbc Brown Boveri & Cie Materiau pour cathode incandescente
EP0028954A1 (fr) * 1979-11-09 1981-05-20 Thomson-Csf Cathode thermo-ionique, son procédé de fabrication et tube électronique incorporant une telle cathode

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004424A1 (fr) * 1978-03-23 1979-10-03 Thorn Emi-Varian Limited Cathode thermoionique
EP0005279A2 (fr) * 1978-05-05 1979-11-14 BBC Aktiengesellschaft Brown, Boveri & Cie. Cathode chaude
FR2425144A1 (fr) * 1978-05-05 1979-11-30 Bbc Brown Boveri & Cie Materiau pour cathode incandescente
EP0005279A3 (en) * 1978-05-05 1979-12-12 Bbc Brown, Boveri & Cie. (Aktiengesellschaft) Hot cathode
EP0028954A1 (fr) * 1979-11-09 1981-05-20 Thomson-Csf Cathode thermo-ionique, son procédé de fabrication et tube électronique incorporant une telle cathode
FR2469792A1 (fr) * 1979-11-09 1981-05-22 Thomson Csf Cathode thermo-ionique, son procede de fabrication et tube electronique incorporant une telle cathode

Also Published As

Publication number Publication date
DE1639344B2 (de) 1976-02-12
GB1164413A (en) 1969-09-17
DE1639344A1 (de) 1971-02-04
CH477756A (de) 1969-08-31

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Legal Events

Date Code Title Description
ST Notification of lapse