FR743155A - - Google Patents

Info

Publication number: FR743155A
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

Publication date

1933-03-25

1933-03-25 Application granted granted Critical

1933-03-25 Publication of FR743155A publication Critical patent/FR743155A/fr

Status Expired legal-status Critical Current

- 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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
- F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00

FR743155D Expired FR743155A (fr)

Publication Number	Publication Date
FR743155A true FR743155A (fr)	1933-03-25

Application Number	Title	Priority Date	Filing Date
FR743155D Expired FR743155A (fr)

Country	Link
FR (1)	FR743155A (fr)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1054934B (de) *	1954-08-03	1959-04-16	Westfaelische Metall Industrie	Kraftfahrzeug-Signalleuchte

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1054934B (de) *	1954-08-03	1959-04-16	Westfaelische Metall Industrie	Kraftfahrzeug-Signalleuchte