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Application filed by Maslonka Frantisek, Jozef Ing PomsaharfiledCriticalMaslonka Frantisek
Priority to CS834986ApriorityCriticalpatent/CS238873B1/en
Publication of CS498683A1publicationCriticalpatent/CS498683A1/en
Publication of CS238873B1publicationCriticalpatent/CS238873B1/en