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Application filed by Karel Ing Werdenich, Horst Glatz, Frantisek VargafiledCriticalKarel Ing Werdenich
Priority to CS866356ApriorityCriticalpatent/CS265061B1/cs
Publication of CS635686A1publicationCriticalpatent/CS635686A1/cs
Publication of CS265061B1publicationCriticalpatent/CS265061B1/cs