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Application filed by Svajgl Oldrich, Vladimir Stanek, Prazak Vaclav, Vaclav KratochvilfiledCriticalSvajgl Oldrich
Priority to CS85966ApriorityCriticalpatent/CS252688B1/cs
Publication of CS96685A1publicationCriticalpatent/CS96685A1/cs
Publication of CS252688B1publicationCriticalpatent/CS252688B1/cs