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Application filed by Jan Jisa, Josef MohelnickyfiledCriticalJan Jisa
Priority to CS859985ApriorityCriticalpatent/CS252696B1/cs
Priority to DD29714686Aprioritypatent/DD262767A3/xx
Priority to SU867774377Aprioritypatent/SU1705434A1/ru
Publication of CS998585A1publicationCriticalpatent/CS998585A1/cs
Publication of CS252696B1publicationCriticalpatent/CS252696B1/cs