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Priority to JP5468384UpriorityCriticalpatent/JPS60170538U/ja
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Einrichtung zum Absperren von Rauchgaskanaelen von Feuerungsanlagen mit einer in senkrechter Richtung beweglichen Schieberplatte, die bei ihrer Schliessbewegung den Rauchgaskanal mit der Aussenluft in Verbindung bringt