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Application filed by Josef Ing Prikryl, Jiri Ing Csc Pipal, Ruzicka Karel, Vyskocil FrantisekfiledCriticalJosef Ing Prikryl
Priority to CS86149ApriorityCriticalpatent/CS253231B1/en
Publication of CS14986A1publicationCriticalpatent/CS14986A1/en
Publication of CS253231B1publicationCriticalpatent/CS253231B1/en