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Application filed by Josef Tesar, Vladimir Ing Csci Novotny, Otakar Ing PrajsfiledCriticalJosef Tesar
Priority to CS867804ApriorityCriticalpatent/CS256811B1/en
Publication of CS780486A1publicationCriticalpatent/CS780486A1/en
Publication of CS256811B1publicationCriticalpatent/CS256811B1/en