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Application filed by Josef Ing Jankovsky, Antonin GregorfiledCriticalJosef Ing Jankovsky
Priority to CS856107ApriorityCriticalpatent/CS251827B1/en
Publication of CS610785A1publicationCriticalpatent/CS610785A1/en
Publication of CS251827B1publicationCriticalpatent/CS251827B1/en