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Application filed by Bonasewicz Jan, Ryszard Mgr Ing SkoskiewiczfiledCriticalBonasewicz Jan
Priority to CS882128ApriorityCriticalpatent/CS270031B1/cs
Publication of CS212888A1publicationCriticalpatent/CS212888A1/cs
Publication of CS270031B1publicationCriticalpatent/CS270031B1/cs