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Application filed by Borivoj Ing Malek, Jiri Ing PorkertfiledCriticalBorivoj Ing Malek
Priority to CS865382ApriorityCriticalpatent/CS257245B1/cs
Publication of CS538286A1publicationCriticalpatent/CS538286A1/cs
Publication of CS257245B1publicationCriticalpatent/CS257245B1/cs