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Application filed by Ivanov Genadij M, Burysek Frantisek, Zdenek Silar, Hortlik FrantisekfiledCriticalIvanov Genadij M
Priority to CS867821ApriorityCriticalpatent/CS258171B1/en
Priority to SU877774541Aprioritypatent/SU1657549A1/en
Publication of CS782186A1publicationCriticalpatent/CS782186A1/en
Publication of CS258171B1publicationCriticalpatent/CS258171B1/en