FR678289A - Improvements to luminescence lamps - Google Patents

Improvements to luminescence lamps

Info

Publication number
FR678289A
FR678289A FR678289DA FR678289A FR 678289 A FR678289 A FR 678289A FR 678289D A FR678289D A FR 678289DA FR 678289 A FR678289 A FR 678289A
Authority
FR
France
Prior art keywords
luminescence lamps
luminescence
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
French (fr)
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 FR678289A publication Critical patent/FR678289A/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
    • H01J17/38—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
    • 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
FR678289D 1928-07-12 1929-07-11 Improvements to luminescence lamps Expired FR678289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US678289XA 1928-07-12 1928-07-12

Publications (1)

Publication Number Publication Date
FR678289A true FR678289A (en) 1930-03-20

Family

ID=22078686

Family Applications (1)

Application Number Title Priority Date Filing Date
FR678289D Expired FR678289A (en) 1928-07-12 1929-07-11 Improvements to luminescence lamps

Country Status (1)

Country Link
FR (1) FR678289A (en)

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