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H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
FR831793D1938-01-081938-01-08Dispositif pour l'assombrissement des sources lumineuses dans les locaux et en particulier les cages d'escaliers
ExpiredFR831793A
(fr)
Κατασκευη τεχνητων λιμνων εντος του οροπεδιου σκουρτην "αττικης"και των περιξ καταλληλων περιοχων επι σκοπους δημιουργιας υδατοπτωσεων εν συνδυασμω προς αρδευσεις.