FR862924A - Perfectionnement aux lampes électriques portatives - Google Patents

Perfectionnement aux lampes électriques portatives

Info

Publication number
FR862924A
FR862924A FR862924DA FR862924A FR 862924 A FR862924 A FR 862924A FR 862924D A FR862924D A FR 862924DA FR 862924 A FR862924 A FR 862924A
Authority
FR
France
Prior art keywords
portable electric
further training
electric lights
lights
training
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
Joseph Treves
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 FR862924A publication Critical patent/FR862924A/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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L2/00—Systems of electric lighting devices
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR862924D 1940-01-16 1940-01-16 Perfectionnement aux lampes électriques portatives Expired FR862924A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR862924T 1940-01-16

Publications (1)

Publication Number Publication Date
FR862924A true FR862924A (fr) 1941-03-19

Family

ID=9343024

Family Applications (1)

Application Number Title Priority Date Filing Date
FR862924D Expired FR862924A (fr) 1940-01-16 1940-01-16 Perfectionnement aux lampes électriques portatives

Country Status (1)

Country Link
FR (1) FR862924A (fr)

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