FR833066A - Perfectionnements apportés aux valves thermioniques - Google Patents

Perfectionnements apportés aux valves thermioniques

Info

Publication number
FR833066A
FR833066A FR833066DA FR833066A FR 833066 A FR833066 A FR 833066A FR 833066D A FR833066D A FR 833066DA FR 833066 A FR833066 A FR 833066A
Authority
FR
France
Prior art keywords
thermionic valves
thermionic
valves
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.)
BRITISH DRIVER HARRIS CO Ltd
Original Assignee
BRITISH DRIVER HARRIS CO 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
Application filed by BRITISH DRIVER HARRIS CO Ltd filed Critical BRITISH DRIVER HARRIS CO Ltd
Application granted granted Critical
Publication of FR833066A publication Critical patent/FR833066A/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
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • 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
    • H01J2893/0019—Chemical composition and manufacture
    • 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
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/002—Chemical composition and manufacture chemical
FR833066D 1937-02-03 1938-02-02 Perfectionnements apportés aux valves thermioniques Expired FR833066A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US123849A US2115759A (en) 1937-02-03 1937-02-03 Manufacture of radio tubes

Publications (1)

Publication Number Publication Date
FR833066A true FR833066A (fr) 1938-10-11

Family

ID=22411254

Family Applications (1)

Application Number Title Priority Date Filing Date
FR833066D Expired FR833066A (fr) 1937-02-03 1938-02-02 Perfectionnements apportés aux valves thermioniques

Country Status (4)

Country Link
US (1) US2115759A (fr)
AT (1) AT157649B (fr)
FR (1) FR833066A (fr)
GB (1) GB493487A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463039A (en) * 1942-02-21 1949-03-01 Gen Motors Corp Electroplating copper containing coating

Also Published As

Publication number Publication date
AT157649B (de) 1939-12-27
US2115759A (en) 1938-05-03
GB493487A (en) 1938-10-10

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