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FRANCOIS BOULON
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FRANCOIS BOULON
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Application grantedgrantedCritical
Publication of FR5980EpublicationCriticalpatent/FR5980E/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
F21V37/02—Special adaptation for protection against draughts ; Draft controllers
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Engineering & Computer Science
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Chemical & Material Sciences
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Combustion & Propulsion
(AREA)
General Engineering & Computer Science
(AREA)
FR5980D1905-11-301906-02-21Dispositif pour augmenter l'intensité lumineuse et diminuer la consommation des lampes à incandescence
ExpiredFR5980E
(fr)