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Application filed by Vaclav Velechovsky, Vojtech HajsmanfiledCriticalVaclav Velechovsky
Priority to CS858610ApriorityCriticalpatent/CS255066B1/cs
Publication of CS861085A1publicationCriticalpatent/CS861085A1/cs
Publication of CS255066B1publicationCriticalpatent/CS255066B1/cs