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Application filed by Josef Ing Polasek, Josef StanglicafiledCriticalJosef Ing Polasek
Priority to CS827320ApriorityCriticalpatent/CS241311B1/en
Publication of CS732082A1publicationCriticalpatent/CS732082A1/en
Publication of CS241311B1publicationCriticalpatent/CS241311B1/en