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Application filed by Jozef Ing Bukovy, Jaroslav Ivanovic Ing GradovfiledCriticalJozef Ing Bukovy
Priority to CS853973ApriorityCriticalpatent/CS254671B1/en
Publication of CS397385A1publicationCriticalpatent/CS397385A1/en
Publication of CS254671B1publicationCriticalpatent/CS254671B1/en