FR521222A - Perfectionnements apportés aux lampes à conductibilité gazeuse - Google Patents

Perfectionnements apportés aux lampes à conductibilité gazeuse

Info

Publication number
FR521222A
FR521222A FR521222A FR521222DA FR521222A FR 521222 A FR521222 A FR 521222A FR 521222 A FR521222 A FR 521222A FR 521222D A FR521222D A FR 521222DA FR 521222 A FR521222 A FR 521222A
Authority
FR
France
Prior art keywords
gas
improvements made
lamps
conductive
conductive 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
FR521222A
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 FR521222A publication Critical patent/FR521222A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/64—Cathode glow lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
    • H01J2893/0065—Electrode systems
    • H01J2893/0067—Electrode assembly without control electrodes, e.g. including a screen
FR521222A 1917-11-30 1920-07-27 Perfectionnements apportés aux lampes à conductibilité gazeuse Expired FR521222A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US521222XA 1917-11-30 1917-11-30

Publications (1)

Publication Number Publication Date
FR521222A true FR521222A (fr) 1921-07-08

Family

ID=21975606

Family Applications (1)

Application Number Title Priority Date Filing Date
FR521222A Expired FR521222A (fr) 1917-11-30 1920-07-27 Perfectionnements apportés aux lampes à conductibilité gazeuse

Country Status (1)

Country Link
FR (1) FR521222A (fr)

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