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Publication of BE726088ApublicationCriticalpatent/BE726088A/xx
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V23/00—Arrangement of electric circuit elements in or on lighting devices
F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
