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Application filed by Jaroslav Ing Skopek, Josef Ing BorekfiledCriticalJaroslav Ing Skopek
Priority to CS865118ApriorityCriticalpatent/CS263418B1/cs
Publication of CS511886A1publicationCriticalpatent/CS511886A1/cs
Publication of CS263418B1publicationCriticalpatent/CS263418B1/cs