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Application filed by Karel Ing Hejduk, Pavel NovotnyfiledCriticalKarel Ing Hejduk
Priority to CS823886ApriorityCriticalpatent/CS240667B1/en
Publication of CS388682A1publicationCriticalpatent/CS388682A1/en
Publication of CS240667B1publicationCriticalpatent/CS240667B1/en