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Application filed by Kubala Jozef, Anton Ing OndrejkovicfiledCriticalKubala Jozef
Priority to CS841679ApriorityCriticalpatent/CS239597B1/cs
Publication of CS167984A1publicationCriticalpatent/CS167984A1/cs
Publication of CS239597B1publicationCriticalpatent/CS239597B1/cs