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Application filed by Pina Bohumil, Homola Jaroslav, Petr Ing Svab, Vlasta Ing ZamberskyfiledCriticalPina Bohumil
Priority to CS834363ApriorityCriticalpatent/CS231897B1/en
Publication of CS436383A1publicationCriticalpatent/CS436383A1/en
Publication of CS231897B1publicationCriticalpatent/CS231897B1/en