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FR709074A - Lightening devices - Google Patents

Lightening devices

Info

Publication number
FR709074A
FR709074A FR709074DA FR709074A FR 709074 A FR709074 A FR 709074A FR 709074D A FR709074D A FR 709074DA FR 709074 A FR709074 A FR 709074A
Authority
FR
France
Prior art keywords
lightening devices
lightening
devices
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trouvay and Cauvin SA
Original Assignee
Trouvay and Cauvin SA
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 by Trouvay and Cauvin SA filed Critical Trouvay and Cauvin SA
Application granted granted Critical
Publication of FR709074A publication Critical patent/FR709074A/en
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)
FR709074D 1931-01-09 1931-01-09 Lightening devices Expired FR709074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR709074T 1931-01-09

Publications (1)

Publication Number Publication Date
FR709074A true FR709074A (en) 1931-08-03

Family

ID=9069258

Family Applications (1)

Application Number Title Priority Date Filing Date
FR709074D Expired FR709074A (en) 1931-01-09 1931-01-09 Lightening devices

Country Status (1)

Country Link
FR (1) FR709074A (en)

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