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.)
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Anciens Etablissements Barbier Benard and Turenne SA
Original Assignee
Anciens Etablissements Barbier Benard and Turenne SA
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Filing date
Publication date
Application filed by Anciens Etablissements Barbier Benard and Turenne SAfiledCriticalAnciens Etablissements Barbier Benard and Turenne SA
Application grantedgrantedCritical
Publication of FR658067ApublicationCriticalpatent/FR658067A/fr
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
F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
FR658067D1928-07-251928-07-25Dispositif pour l'éclairage indirect d'intérieurs
ExpiredFR658067A
(fr)