FR541287A - Repères lumineux - Google Patents

Repères lumineux

Info

Publication number
FR541287A
FR541287A FR541287DA FR541287A FR 541287 A FR541287 A FR 541287A FR 541287D A FR541287D A FR 541287DA FR 541287 A FR541287 A FR 541287A
Authority
FR
France
Prior art keywords
luminous markers
markers
luminous
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
Emile Weisweiller
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 FR541287A publication Critical patent/FR541287A/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
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
FR541287D 1921-09-17 1921-09-17 Repères lumineux Expired FR541287A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR541287T 1921-09-17

Publications (1)

Publication Number Publication Date
FR541287A true FR541287A (fr) 1922-07-25

Family

ID=8930002

Family Applications (1)

Application Number Title Priority Date Filing Date
FR541287D Expired FR541287A (fr) 1921-09-17 1921-09-17 Repères lumineux

Country Status (1)

Country Link
FR (1) FR541287A (fr)

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