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Publication of FR24137EpublicationCriticalpatent/FR24137E/fr
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
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Engineering & Computer Science
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General Engineering & Computer Science
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FR24137A1920-12-041920-12-04Perfectionnements aux projecteurs
ExpiredFR24137E
(fr)