FR842594A - Improvements to electric discharge tubes and lamps - Google Patents

Improvements to electric discharge tubes and lamps

Info

Publication number
FR842594A
FR842594A FR842594DA FR842594A FR 842594 A FR842594 A FR 842594A FR 842594D A FR842594D A FR 842594DA FR 842594 A FR842594 A FR 842594A
Authority
FR
France
Prior art keywords
lamps
electric discharge
discharge tubes
tubes
electric
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
French (fr)
Inventor
Francois Desire Roger Navarre
Christian Paul Navarre
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.)
COUNTY OF LONDON ELECTRIC SUPP
Original Assignee
COUNTY OF LONDON ELECTRIC SUPP
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 COUNTY OF LONDON ELECTRIC SUPP filed Critical COUNTY OF LONDON ELECTRIC SUPP
Application granted granted Critical
Publication of FR842594A publication Critical patent/FR842594A/en
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
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes
    • H01J17/066—Cold cathodes
    • 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
    • H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
FR842594D 1938-08-18 1938-08-25 Improvements to electric discharge tubes and lamps Expired FR842594A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB842594X 1938-08-18

Publications (1)

Publication Number Publication Date
FR842594A true FR842594A (en) 1939-06-14

Family

ID=10568178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR842594D Expired FR842594A (en) 1938-08-18 1938-08-25 Improvements to electric discharge tubes and lamps

Country Status (1)

Country Link
FR (1) FR842594A (en)

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