FR877123A - Improvements to gas discharge lamps - Google Patents

Improvements to gas discharge lamps

Info

Publication number
FR877123A
FR877123A FR877123DA FR877123A FR 877123 A FR877123 A FR 877123A FR 877123D A FR877123D A FR 877123DA FR 877123 A FR877123 A FR 877123A
Authority
FR
France
Prior art keywords
gas discharge
discharge lamps
lamps
gas
discharge
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 des Lampes
Original Assignee
Compagnie des Lampes
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 des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR877123A publication Critical patent/FR877123A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/28—Means for producing, introducing, or replenishing gas or vapour during operation of the lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
FR877123D 1940-11-02 1941-11-21 Improvements to gas discharge lamps Expired FR877123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US364019A US2326346A (en) 1940-11-02 1940-11-02 Vapor lamp for sound recording

Publications (1)

Publication Number Publication Date
FR877123A true FR877123A (en) 1942-11-27

Family

ID=23432687

Family Applications (1)

Application Number Title Priority Date Filing Date
FR877123D Expired FR877123A (en) 1940-11-02 1941-11-21 Improvements to gas discharge lamps

Country Status (3)

Country Link
US (1) US2326346A (en)
FR (1) FR877123A (en)
GB (1) GB550375A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532463A (en) * 1949-03-23 1950-12-05 Hanovia Chemical & Mfg Co Temperature calibrated metal vapor discharge lamp

Also Published As

Publication number Publication date
GB550375A (en) 1943-01-05
US2326346A (en) 1943-08-10

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