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Application filed by Antonin Krizek, Karel Stejskal, Jan SedlacekfiledCriticalAntonin Krizek
Priority to CS84785ApriorityCriticalpatent/CS237098B1/cs
Publication of CS78584A1publicationCriticalpatent/CS78584A1/cs
Publication of CS237098B1publicationCriticalpatent/CS237098B1/cs