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Application filed by Slavik Vlastimil, Jitka SvestkovafiledCriticalSlavik Vlastimil
Priority to CS86641ApriorityCriticalpatent/CS257894B1/cs
Publication of CS64186A1publicationCriticalpatent/CS64186A1/cs
Publication of CS257894B1publicationCriticalpatent/CS257894B1/cs