FR1158927A - Method and device for increasing the brightness of dark rooms - Google Patents

Method and device for increasing the brightness of dark rooms

Info

Publication number
FR1158927A
FR1158927A FR1158927DA FR1158927A FR 1158927 A FR1158927 A FR 1158927A FR 1158927D A FR1158927D A FR 1158927DA FR 1158927 A FR1158927 A FR 1158927A
Authority
FR
France
Prior art keywords
brightness
increasing
dark rooms
rooms
dark
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
Roger-Michel Benoit
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 FR1158927A publication Critical patent/FR1158927A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S11/00—Non-electric lighting devices or systems using daylight

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
FR1158927D 1956-10-01 1956-10-01 Method and device for increasing the brightness of dark rooms Expired FR1158927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1158927T 1956-10-01

Publications (1)

Publication Number Publication Date
FR1158927A true FR1158927A (en) 1958-06-20

Family

ID=9651304

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1158927D Expired FR1158927A (en) 1956-10-01 1956-10-01 Method and device for increasing the brightness of dark rooms

Country Status (3)

Country Link
BE (1) BE561191A (en)
FR (1) FR1158927A (en)
LU (1) LU35480A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516204A1 (en) * 1981-11-06 1983-05-13 Lampes Sa AUTONOMOUS LIGHTING TERMINAL

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516204A1 (en) * 1981-11-06 1983-05-13 Lampes Sa AUTONOMOUS LIGHTING TERMINAL
EP0079267A1 (en) * 1981-11-06 1983-05-18 Compagnie Des Lampes Self-contained post-mounted lighting fixture

Also Published As

Publication number Publication date
BE561191A (en)
LU35480A1 (en)

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