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FR418758D1909-10-071909-10-07Appareil refouleur d'air pour conduits d'air, de gaz, de fumée et cheminées de lampes ou autres appareils d'éclairage
ExpiredFR418758A
(fr)
Appareil d'éclairage rotatif pour lumière à incandescence par le gaz pour becs droits ou renversés, destiné aux effets d'exposition ou de réclame