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Compteurs Schlumberger SA
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Compteurs Schlumberger SA
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Publication of FR504908ApublicationCriticalpatent/FR504908A/fr
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V37/00—Details of lighting devices employing combustion as light source, not otherwise provided for
F21V37/0004—Details of lighting devices employing combustion as light source, not otherwise provided for using liquid fuel
F21V37/0075—Fastening or safety devices for reflectors, cover glasses or chimneys
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V15/00—Protecting lighting devices from damage
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FR504908A1919-10-151919-10-15Anti-trépidateur pour appareils automatiques d'allumage et d'extinction des becs de gaz
ExpiredFR504908A
(fr)
Appareil pour produire automatiquement l'allumage et l'extinction des becs de gaz des candélabres et autres appareils d'éclairage à des moments déterminés d'avance