FR510991A - Improvements in the manufacture of luminescent tubes - Google Patents

Improvements in the manufacture of luminescent tubes

Info

Publication number
FR510991A
FR510991A FR510991A FR510991DA FR510991A FR 510991 A FR510991 A FR 510991A FR 510991 A FR510991 A FR 510991A FR 510991D A FR510991D A FR 510991DA FR 510991 A FR510991 A FR 510991A
Authority
FR
France
Prior art keywords
manufacture
luminescent tubes
luminescent
tubes
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
FR510991A
Other languages
French (fr)
Inventor
Georges Claude
Jean-Marie-Edouard De Beaufort
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.)
JEAN-MARIE-EDOUARD DE BEAUFORT
Original Assignee
JEAN-MARIE-EDOUARD DE BEAUFORT
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 JEAN-MARIE-EDOUARD DE BEAUFORT filed Critical JEAN-MARIE-EDOUARD DE BEAUFORT
Application granted granted Critical
Publication of FR510991A publication Critical patent/FR510991A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/22—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps having an auxiliary starting electrode
FR510991A 1919-08-29 1919-08-29 Improvements in the manufacture of luminescent tubes Expired FR510991A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR510991T 1919-08-29

Publications (1)

Publication Number Publication Date
FR510991A true FR510991A (en) 1920-12-14

Family

ID=8912105

Family Applications (1)

Application Number Title Priority Date Filing Date
FR510991A Expired FR510991A (en) 1919-08-29 1919-08-29 Improvements in the manufacture of luminescent tubes

Country Status (1)

Country Link
FR (1) FR510991A (en)

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