FR473788A - Device for reducing the heat emitted by lighting devices and in particular by incandescent electric lamps - Google Patents

Device for reducing the heat emitted by lighting devices and in particular by incandescent electric lamps

Info

Publication number
FR473788A
FR473788A FR473788DA FR473788A FR 473788 A FR473788 A FR 473788A FR 473788D A FR473788D A FR 473788DA FR 473788 A FR473788 A FR 473788A
Authority
FR
France
Prior art keywords
reducing
lighting devices
heat emitted
electric lamps
incandescent electric
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.)
INTERNATIONALE DE LUMIERE FROIDE PROCEDES Ste
Original Assignee
INTERNATIONALE DE LUMIERE FROIDE PROCEDES Ste
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 INTERNATIONALE DE LUMIERE FROIDE PROCEDES Ste filed Critical INTERNATIONALE DE LUMIERE FROIDE PROCEDES Ste
Application granted granted Critical
Publication of FR473788A publication Critical patent/FR473788A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR473788D 1913-10-14 1913-10-14 Device for reducing the heat emitted by lighting devices and in particular by incandescent electric lamps Expired FR473788A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR473788T 1913-10-14

Publications (1)

Publication Number Publication Date
FR473788A true FR473788A (en) 1915-01-26

Family

ID=1511818

Family Applications (1)

Application Number Title Priority Date Filing Date
FR473788D Expired FR473788A (en) 1913-10-14 1913-10-14 Device for reducing the heat emitted by lighting devices and in particular by incandescent electric lamps

Country Status (1)

Country Link
FR (1) FR473788A (en)

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