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Application filed by Alexander Ing Gala, Frantisek Ing Vavros, Vladimir Ing KoudelafiledCriticalAlexander Ing Gala
Priority to CS839698ApriorityCriticalpatent/CS238784B1/en
Publication of CS969883A1publicationCriticalpatent/CS969883A1/en
Publication of CS238784B1publicationCriticalpatent/CS238784B1/en