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Application filed by Arnost Ing Pala, Bretislav ZidekfiledCriticalArnost Ing Pala
Priority to CS879902ApriorityCriticalpatent/CS265682B1/cs
Publication of CS990287A1publicationCriticalpatent/CS990287A1/cs
Publication of CS265682B1publicationCriticalpatent/CS265682B1/cs