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Application filed by Kejnovsky Bohumil, Otakar Stork, Pavlik Vladimir, Ruzena Prochazkova, Josef PialekfiledCriticalKejnovsky Bohumil
Priority to CS875383ApriorityCriticalpatent/CS263035B1/en
Publication of CS538387A1publicationCriticalpatent/CS538387A1/en
Publication of CS263035B1publicationCriticalpatent/CS263035B1/en