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Application filed by Jan Ing Matulka, Josef Ing FrankfiledCriticalJan Ing Matulka
Priority to CS460588ApriorityCriticalpatent/CS272588B1/en
Publication of CS460588A1publicationCriticalpatent/CS460588A1/en
Publication of CS272588B1publicationCriticalpatent/CS272588B1/en