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Application filed by Otakar Ing Svabensky, Miroslav Ing VeselkafiledCriticalOtakar Ing Svabensky
Priority to CS859243ApriorityCriticalpatent/CS251585B1/en
Publication of CS924385A1publicationCriticalpatent/CS924385A1/en
Publication of CS251585B1publicationCriticalpatent/CS251585B1/en