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Application filed by Jozef Ing Sloboda, Vladimir Benuska, Jan Strba, Irena Kopalova, Jan Ing BelianskyfiledCriticalJozef Ing Sloboda
Priority to CS866153ApriorityCriticalpatent/CS257357B1/cs
Publication of CS615386A1publicationCriticalpatent/CS615386A1/cs
Publication of CS257357B1publicationCriticalpatent/CS257357B1/cs