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Application filed by Jan Ing Bieskok, Leos Kasparek, Ivan HranickyfiledCriticalJan Ing Bieskok
Priority to CS856604ApriorityCriticalpatent/CS256028B1/en
Publication of CS660485A1publicationCriticalpatent/CS660485A1/en
Publication of CS256028B1publicationCriticalpatent/CS256028B1/en