FR1172578A - Lighting fixtures improvements - Google Patents

Lighting fixtures improvements

Info

Publication number
FR1172578A
FR1172578A FR1172578DA FR1172578A FR 1172578 A FR1172578 A FR 1172578A FR 1172578D A FR1172578D A FR 1172578DA FR 1172578 A FR1172578 A FR 1172578A
Authority
FR
France
Prior art keywords
lighting fixtures
fixtures
lighting
fixtures 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
French (fr)
Inventor
George Victor Downer
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 FR1172578A publication Critical patent/FR1172578A/en
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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR1172578D 1956-01-30 1957-01-29 Lighting fixtures improvements Expired FR1172578A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1172578X 1956-01-30

Publications (1)

Publication Number Publication Date
FR1172578A true FR1172578A (en) 1959-02-12

Family

ID=10879555

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1172578D Expired FR1172578A (en) 1956-01-30 1957-01-29 Lighting fixtures improvements

Country Status (1)

Country Link
FR (1) FR1172578A (en)

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