FR590991A - - Google Patents

Info

Publication number
FR590991A
FR590991A FR590991DA FR590991A FR 590991 A FR590991 A FR 590991A FR 590991D A FR590991D A FR 590991DA FR 590991 A FR590991 A FR 590991A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR590991A publication Critical patent/FR590991A/fr
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR590991D Expired FR590991A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
FR590991A true FR590991A (enrdf_load_stackoverflow) 1925-06-26

Family

ID=1540054

Family Applications (1)

Application Number Title Priority Date Filing Date
FR590991D Expired FR590991A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
FR (1) FR590991A (enrdf_load_stackoverflow)

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