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Gluehlampe Maxim. Zeichnung aus USPatent von Typische frhe Kohlefadenlampe der United States Electric Lighting Company mit Carbon in MForm nach dem Chefentwickler Hiram Maxim google id yxhJAAAAEBAJ pg PA onepage false PatentUS Hiram Maxim PDold Original upload log de GluehlampeMaxim Hgnp bytes no Information Zeichnung