FR921034A - Improvements to projection lamps - Google Patents

Improvements to projection lamps

Info

Publication number
FR921034A
FR921034A FR921034DA FR921034A FR 921034 A FR921034 A FR 921034A FR 921034D A FR921034D A FR 921034DA FR 921034 A FR921034 A FR 921034A
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
Other languages
French (fr)
Inventor
Dimitri Issaiewitch-Rebikoff
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 filed Critical
Application granted granted Critical
Publication of FR921034A publication Critical patent/FR921034A/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)
FR921034D 1946-02-01 1946-02-01 Improvements to projection lamps Expired FR921034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR921034T 1946-02-01

Publications (1)

Publication Number Publication Date
FR921034A true FR921034A (en) 1947-04-24

Family

ID=9433058

Family Applications (1)

Application Number Title Priority Date Filing Date
FR921034D Expired FR921034A (en) 1946-02-01 1946-02-01 Improvements to projection lamps

Country Status (1)

Country Link
FR (1) FR921034A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600857A (en) * 1984-04-05 1986-07-15 Craig Suhar Lamp with integral heat sink

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600857A (en) * 1984-04-05 1986-07-15 Craig Suhar Lamp with integral heat sink

Similar Documents

Publication Publication Date Title
FR942149A (en) Burners improvements
FR923235A (en) Improvements to cycles
FR921034A (en) Improvements to projection lamps
FR57031E (en) Improvements to projection devices
FR924998A (en) Improvements to lens assemblies
FR933155A (en) Improvements to projection lamps
FR927936A (en) Improvements to stepladders
FR937318A (en) Lamp refinements
FR935612A (en) Letter-Envelope Improvements
FR54997E (en) Brake improvements
FR947571A (en) Brake improvements
FR924699A (en) Improvements to starters
FR921262A (en) Improvements made to lampshades
FR952479A (en) Improvements to light reflectors
FR920761A (en) Improvements to igniters
FR950213A (en) Thermionic lamps
FR928375A (en) Improvements to metal sockets
FR953875A (en) Improvements to scaffolding
FR924464A (en) Improvements to electric lamps
FR937595A (en) Improvements to so-called portable lamps
FR941857A (en) Improvements to loco-tractors
FR936061A (en) Improvements to jointer-planers
FR923134A (en) Improvements to account-laying
FR928370A (en) Improvements to demountable houses
FR932448A (en) Improvements to enlargers