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Application filed by Jozef Ing Dadan, Stanislav Ing CelkafiledCriticalJozef Ing Dadan
Priority to CS806507ApriorityCriticalpatent/CS232207B1/cs
Publication of CS650780A1publicationCriticalpatent/CS650780A1/cs
Publication of CS232207B1publicationCriticalpatent/CS232207B1/cs