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Application filed by Vladimir Ing Spilka, Oldrich MradilfiledCriticalVladimir Ing Spilka
Priority to CS86980ApriorityCriticalpatent/CS255838B1/cs
Publication of CS98086A1publicationCriticalpatent/CS98086A1/cs
Publication of CS255838B1publicationCriticalpatent/CS255838B1/cs