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Publication date
Application filed by Rudolf Ing Holecek, Jiri Folprecht, Jan Ing Gregr, Manek BretislavfiledCriticalRudolf Ing Holecek
Priority to CS835519ApriorityCriticalpatent/CS232288B1/en
Publication of CS551983A1publicationCriticalpatent/CS551983A1/en
Publication of CS232288B1publicationCriticalpatent/CS232288B1/en