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Application filed by Josef Ferda, Borivoj FucikfiledCriticalJosef Ferda
Priority to CS883956ApriorityCriticalpatent/CS270344B1/cs
Priority to IT8920733Aprioritypatent/IT1229415B/it
Publication of CS395688A1publicationCriticalpatent/CS395688A1/cs
Publication of CS270344B1publicationCriticalpatent/CS270344B1/cs