FR77880E - Lampe électrique de projection - Google Patents

Lampe électrique de projection

Info

Publication number
FR77880E
FR77880E FR829529A FR829529A FR77880E FR 77880 E FR77880 E FR 77880E FR 829529 A FR829529 A FR 829529A FR 829529 A FR829529 A FR 829529A FR 77880 E FR77880 E FR 77880E
Authority
FR
France
Prior art keywords
projection lamp
electric projection
electric
lamp
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
FR829529A
Other languages
English (en)
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 US742384A external-priority patent/US2904714A/en
Application filed by Compagnie des Lampes filed Critical Compagnie des Lampes
Priority to FR829529A priority Critical patent/FR77880E/fr
Application granted granted Critical
Publication of FR77880E publication Critical patent/FR77880E/fr
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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/202—Incandescent light sources
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR829529A 1958-06-16 1960-06-09 Lampe électrique de projection Expired FR77880E (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR829529A FR77880E (fr) 1958-06-16 1960-06-09 Lampe électrique de projection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US742384A US2904714A (en) 1958-06-16 1958-06-16 Electric lamp
FR829529A FR77880E (fr) 1958-06-16 1960-06-09 Lampe électrique de projection

Publications (1)

Publication Number Publication Date
FR77880E true FR77880E (fr) 1962-05-04

Family

ID=26186331

Family Applications (1)

Application Number Title Priority Date Filing Date
FR829529A Expired FR77880E (fr) 1958-06-16 1960-06-09 Lampe électrique de projection

Country Status (1)

Country Link
FR (1) FR77880E (fr)

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