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Elektrische Gleichstrombogenlampe mit Kohle-, Effekt- oder Dochtelektroden, insbesondere fuer Scheinwerfer, bei welcher ohne Zuhilfenahme eines Magnetfeldes zur Vergleichmaessigung des Lichtbogens die Entladungsstrecke von einem Luftstrom umhuellt ist, der von der positiven zur negativen Elektrode s