FR653847A - Perfectionnements apportés aux projecteurs - Google Patents

Perfectionnements apportés aux projecteurs

Info

Publication number
FR653847A
FR653847A FR653847DA FR653847A FR 653847 A FR653847 A FR 653847A FR 653847D A FR653847D A FR 653847DA FR 653847 A FR653847 A FR 653847A
Authority
FR
France
Prior art keywords
projectors
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
Stephen Grebel
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 FR653847A publication Critical patent/FR653847A/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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR653847D 1927-05-25 1928-05-04 Perfectionnements apportés aux projecteurs Expired FR653847A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE653847X 1927-05-25

Publications (1)

Publication Number Publication Date
FR653847A true FR653847A (fr) 1929-03-28

Family

ID=3876861

Family Applications (1)

Application Number Title Priority Date Filing Date
FR653847D Expired FR653847A (fr) 1927-05-25 1928-05-04 Perfectionnements apportés aux projecteurs

Country Status (1)

Country Link
FR (1) FR653847A (fr)

Similar Documents

Publication Publication Date Title
FR648701A (fr) Perfectionnements apportés aux cristalliseurs
FR634802A (fr) Perfectionnements aux carburateurs
FR665286A (fr) Perfectionnements apportés aux projecteurs
FR653847A (fr) Perfectionnements apportés aux projecteurs
FR629132A (fr) Perfectionnements aux servo-freins
FR642986A (fr) Perfectionnements aux appareils cinématographiques
FR647748A (fr) Perfectionnements apportés aux appareils cinématographiques
FR33497E (fr) Perfectionnements aux appareils cinématographiques
FR646633A (fr) Perfectionnements aux saxophones
FR647445A (fr) Perfectionnements aux écrans de cinématographe
FR643277A (fr) Perfectionnements aux appareils deprojection
FR646219A (fr) Perfectionnements aux échasses
FR640948A (fr) Perfectionnements aux carburateurs
FR640863A (fr) Perfectionnements aux norias
FR628323A (fr) Perfectionnements aux dynamos-démarreurs
FR657896A (fr) Perfectionnements aux
FR660479A (fr) Perfectionnements aux microtéléphones
FR631979A (fr) Perfectionnements apportés aux réveils
FR660753A (fr) Perfectionnements aux micro-téléphones
FR657151A (fr) Perfectionnements apportés aux galons-moulures
FR639703A (fr) Perfectionnements aux norias
FR639811A (fr) Perfectionnements aux suspensoirs
FR657148A (fr) Perfectionnements relatifs aux stylographes
FR649276A (fr) Perfectionnements apportés aux projecteurs
FR685940A (fr) Perfectionnements apportés aux projecteurs