FR831253A - Perfectionnements relatifs aux projecteurs - Google Patents

Perfectionnements relatifs aux projecteurs

Info

Publication number
FR831253A
FR831253A FR831253DA FR831253A FR 831253 A FR831253 A FR 831253A FR 831253D A FR831253D A FR 831253DA FR 831253 A FR831253 A FR 831253A
Authority
FR
France
Prior art keywords
projectors
projectors improvements
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
English (en)
Inventor
John Clifford Savage
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 FR831253A publication Critical patent/FR831253A/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR831253D 1937-12-24 1937-12-24 Perfectionnements relatifs aux projecteurs Expired FR831253A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR831253T 1937-12-24

Publications (1)

Publication Number Publication Date
FR831253A true FR831253A (fr) 1938-08-29

Family

ID=9291223

Family Applications (1)

Application Number Title Priority Date Filing Date
FR831253D Expired FR831253A (fr) 1937-12-24 1937-12-24 Perfectionnements relatifs aux projecteurs

Country Status (1)

Country Link
FR (1) FR831253A (fr)

Similar Documents

Publication Publication Date Title
FR849288A (fr) Perfectionnements aux radio-compas
FR49327E (fr) Perfectionnements aux projecteurs
FR831543A (fr) Perfectionnements aux freins
FR837297A (fr) Perfectionnement aux matelas
FR832894A (fr) Perfectionnements aux emballages
FR822162A (fr) Perfectionnements aux sièges
FR831492A (fr) Perfectionnements aux freins
FR840144A (fr) Perfectionnement aux filtres
FR843628A (fr) Perfectionnements aux hauts-parleurs
FR49008E (fr) Perfectionnements aux brûleurs
FR823888A (fr) Perfectionnements aux carburateurs
FR834486A (fr) Perfectionnements aux carburateurs
FR818430A (fr) Perfectionnement aux ceintures
FR831253A (fr) Perfectionnements relatifs aux projecteurs
FR835077A (fr) Perfectionnements aux silencieux
FR830976A (fr) Perfectionnements aux carburateurs
FR831772A (fr) Perfectionnements aux freins
FR830173A (fr) Projecteur
FR835414A (fr) Perfectionnements aux lampes-éclair
FR835104A (fr) Perfectionnements aux lampes éclair
FR844339A (fr) Projecteur cinématographique
FR838567A (fr) Projecteur cinématographique
FR826353A (fr) Perfectionnements aux silencieux
DK54642C (da) Projektør.
FR840013A (fr) Perfectionnement aux abat-jour