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Application filed by Pavol Ing Slizik, Jan Ing VaclavfiledCriticalPavol Ing Slizik
Priority to CS830488ApriorityCriticalpatent/CS273092B1/cs
Publication of CS830488A1publicationCriticalpatent/CS830488A1/cs
Publication of CS273092B1publicationCriticalpatent/CS273092B1/cs