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Application filed by Rudolf Ing Tesar, Vaclav Ing Csc Skala, Karel Ing ZdrahalfiledCriticalRudolf Ing Tesar
Priority to CS836132ApriorityCriticalpatent/CS239283B1/en
Publication of CS613283A1publicationCriticalpatent/CS613283A1/en
Publication of CS239283B1publicationCriticalpatent/CS239283B1/en