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Publication date
Application filed by Vaclav Mrstina, Marie Pindrycova, Josef Ing Domas, Jiri Ing OrnafiledCriticalVaclav Mrstina
Priority to CS87133ApriorityCriticalpatent/CS258938B1/en
Publication of CS13387A1publicationCriticalpatent/CS13387A1/en
Publication of CS258938B1publicationCriticalpatent/CS258938B1/en