FR878759A - Improvements to discharge lamps - Google Patents

Improvements to discharge lamps

Info

Publication number
FR878759A
FR878759A FR878759DA FR878759A FR 878759 A FR878759 A FR 878759A FR 878759D A FR878759D A FR 878759DA FR 878759 A FR878759 A FR 878759A
Authority
FR
France
Prior art keywords
discharge lamps
lamps
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 FR878759A publication Critical patent/FR878759A/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
    • H01J61/30—Vessels; Containers
    • H01J61/33—Special shape of cross-section, e.g. for producing cool spot
FR878759D 1940-12-30 1941-12-30 Improvements to discharge lamps Expired FR878759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US372273A US2329124A (en) 1940-12-30 1940-12-30 Gaseous electrical discharge lamp

Publications (1)

Publication Number Publication Date
FR878759A true FR878759A (en) 1943-01-29

Family

ID=23467447

Family Applications (1)

Application Number Title Priority Date Filing Date
FR878759D Expired FR878759A (en) 1940-12-30 1941-12-30 Improvements to discharge lamps

Country Status (5)

Country Link
US (1) US2329124A (en)
BE (1) BE444348A (en)
DE (1) DE748762C (en)
FR (1) FR878759A (en)
NL (1) NL67953C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187860A (en) * 1981-05-13 1982-11-18 Hitachi Ltd Discharge lamp with mercury of very high pressure
US5138228A (en) * 1990-12-31 1992-08-11 Welch Allyn, Inc. Bulb geometry for low power metal halide lamp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696505C (en) * 1938-12-01 1940-09-23 Patra Patent Treuhand Electric high-performance overpressure discharge lamp for projection purposes

Also Published As

Publication number Publication date
BE444348A (en) 1942-03-31
NL67953C (en) 1951-06-15
DE748762C (en) 1944-11-09
US2329124A (en) 1943-09-07

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