FR684221A - Perfectionnements aux lampes thermoïoniques - Google Patents

Perfectionnements aux lampes thermoïoniques

Info

Publication number
FR684221A
FR684221A FR684221DA FR684221A FR 684221 A FR684221 A FR 684221A FR 684221D A FR684221D A FR 684221DA FR 684221 A FR684221 A FR 684221A
Authority
FR
France
Prior art keywords
thermionic
lamps
thermionic lamps
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of FR684221A publication Critical patent/FR684221A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/065—Devices for short wave tubes
FR684221D 1928-11-02 1929-10-31 Perfectionnements aux lampes thermoïoniques Expired FR684221A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB684221X 1928-11-02

Publications (1)

Publication Number Publication Date
FR684221A true FR684221A (fr) 1930-06-23

Family

ID=10492683

Family Applications (1)

Application Number Title Priority Date Filing Date
FR684221D Expired FR684221A (fr) 1928-11-02 1929-10-31 Perfectionnements aux lampes thermoïoniques

Country Status (1)

Country Link
FR (1) FR684221A (fr)

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