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Application filed by Josef Kotasek, Premysl Ing KonecekfiledCriticalJosef Kotasek
Priority to CS854159ApriorityCriticalpatent/CS255409B1/cs
Publication of CS415985A1publicationCriticalpatent/CS415985A1/cs
Publication of CS255409B1publicationCriticalpatent/CS255409B1/cs