FR1469971A - Improvements to projection lamps - Google Patents

Improvements to projection lamps

Info

Publication number
FR1469971A
FR1469971A FR50898A FR50898A FR1469971A FR 1469971 A FR1469971 A FR 1469971A FR 50898 A FR50898 A FR 50898A FR 50898 A FR50898 A FR 50898A FR 1469971 A FR1469971 A FR 1469971A
Authority
FR
France
Prior art keywords
projection lamps
lamps
projection
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
FR50898A
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
Priority claimed from US435589A external-priority patent/US3325679A/en
Application filed by Compagnie des Lampes filed Critical Compagnie des Lampes
Priority to FR50898A priority Critical patent/FR1469971A/en
Application granted granted Critical
Publication of FR1469971A publication Critical patent/FR1469971A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • H01K7/02—Lamps for purposes other than general lighting for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
FR50898A 1965-02-26 1966-02-24 Improvements to projection lamps Expired FR1469971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR50898A FR1469971A (en) 1965-02-26 1966-02-24 Improvements to projection lamps

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US435589A US3325679A (en) 1965-02-26 1965-02-26 Electric projection lamp having specially configurated envelope
FR50898A FR1469971A (en) 1965-02-26 1966-02-24 Improvements to projection lamps

Publications (1)

Publication Number Publication Date
FR1469971A true FR1469971A (en) 1967-02-17

Family

ID=26168794

Family Applications (1)

Application Number Title Priority Date Filing Date
FR50898A Expired FR1469971A (en) 1965-02-26 1966-02-24 Improvements to projection lamps

Country Status (1)

Country Link
FR (1) FR1469971A (en)

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