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Application filed by Miroslav Ing Necas, Plechacek VaclavfiledCriticalMiroslav Ing Necas
Priority to CS846095ApriorityCriticalpatent/CS239444B1/en
Publication of CS609584A1publicationCriticalpatent/CS609584A1/en
Publication of CS239444B1publicationCriticalpatent/CS239444B1/en