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Application filed by Josef Ing Kiefmann, Antonin Ing Havlicek, Pekarek Oldrich, Milos Janour, Havlin Vladimir, Pavlik Oldrich, Helena Ing Csc Sovova, Heyberger Ales, Prochazka Jaroslav, Cermak JanfiledCriticalJosef Ing Kiefmann
Priority to CS861974ApriorityCriticalpatent/CS262719B1/en
Publication of CS197486A1publicationCriticalpatent/CS197486A1/en
Publication of CS262719B1publicationCriticalpatent/CS262719B1/en