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Application filed by Josef Kredba, Pavel BeranfiledCriticalJosef Kredba
Priority to CS405385ApriorityCriticalpatent/CS249411B1/cs
Priority to DD28846286Aprioritypatent/DD265771A3/xx
Priority to IN359/CAL/86Aprioritypatent/IN163886B/en
Publication of CS249411B1publicationCriticalpatent/CS249411B1/cs