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Application filed by Josef Ing SchaffenbergerfiledCriticalJosef Ing Schaffenberger
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Publication of AT193778BpublicationCriticalpatent/AT193778B/de
Verfahren und Einrichtungen zur Herstellung von Masten, Schornsteinen od. dgl. aus Beton und nach diesem Verfahren hergesteller Mast, Schornstein od. dgl.