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Publication of FR476160ApublicationCriticalpatent/FR476160A/en
F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape
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FR476160D1914-09-071914-09-07
Apparatus for the reflection and scattering of artificial light
ExpiredFR476160A
(en)