FR1137650A - Cathode perfectionnée - Google Patents

Cathode perfectionnée

Info

Publication number
FR1137650A
FR1137650A FR1137650DA FR1137650A FR 1137650 A FR1137650 A FR 1137650A FR 1137650D A FR1137650D A FR 1137650DA FR 1137650 A FR1137650 A FR 1137650A
Authority
FR
France
Prior art keywords
advanced cathode
cathode
advanced
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
English (en)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR1137650A publication Critical patent/FR1137650A/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
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape
FR1137650D 1954-10-22 1955-10-17 Cathode perfectionnée Expired FR1137650A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US463849A US2892120A (en) 1954-10-22 1954-10-22 Cathode structure

Publications (1)

Publication Number Publication Date
FR1137650A true FR1137650A (fr) 1957-05-31

Family

ID=23841560

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1137650D Expired FR1137650A (fr) 1954-10-22 1955-10-17 Cathode perfectionnée

Country Status (4)

Country Link
US (1) US2892120A (fr)
DE (1) DE1034779B (fr)
FR (1) FR1137650A (fr)
GB (1) GB778796A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5686791A (en) * 1992-03-16 1997-11-11 Microelectronics And Computer Technology Corp. Amorphic diamond film flat field emission cathode

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US241366A (en) * 1881-05-10 hussey
US1353976A (en) * 1916-03-20 1920-09-28 Western Electric Co Vacuum-tube device
US1844319A (en) * 1929-09-25 1932-02-09 Hatt Emil Means for producing radio waves
US1969496A (en) * 1931-03-12 1934-08-07 Bell Telephone Labor Inc Electric discharge device
AT135875B (de) * 1932-05-17 1933-12-11 Kremenezky Ag Joh Gerät zur Herstellung von Glühkathoden.
US2117709A (en) * 1936-12-30 1938-05-17 Bell Telephone Labor Inc Electron discharge device
BE473991A (fr) * 1941-06-24
FR901727A (fr) * 1942-05-19 1945-08-03 Gema Ges Fu R Elektroakustisch Cathode incandescente pour lampe électronique
FR978463A (fr) * 1942-09-14 1951-04-13 Csf Cathode à chauffage direct pour tube à modulation de vitesse
US2458693A (en) * 1946-01-25 1949-01-11 Eitel Mccullough Inc Electron tube

Also Published As

Publication number Publication date
GB778796A (en) 1957-07-10
DE1034779B (de) 1958-07-24
US2892120A (en) 1959-06-23

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