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Epervier Gillet & Cie
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Epervier Gillet & Cie
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Publication of FR663439ApublicationCriticalpatent/FR663439A/fr
F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
F21L27/00—Lighting devices or systems, employing combinations of electric and non-electric light sources; Replacing or exchanging electric light sources with non-electric light sources or vice versa in lighting devices or systems
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FR663439D1928-02-201928-02-20Perfectionnements aux lanternes à acétylène
ExpiredFR663439A
(fr)