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Application filed by Antonin Ing Chalupa, Prchlik Vojtech, Jaroslav Ing Prochazka, Vladimir Ing Vacl, Zdenek Ing Vavra, Vladimir Ing VurmfiledCriticalAntonin Ing Chalupa
Priority to CS855532ApriorityCriticalpatent/CS254070B1/en
Publication of CS553285A1publicationCriticalpatent/CS553285A1/en
Publication of CS254070B1publicationCriticalpatent/CS254070B1/en