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Application filed by Ivanov Genadij M, Burysek Frantisek, Zdenek Silar, Hortlik Frantisek, Genadij V Ing ZemskovfiledCriticalIvanov Genadij M
Priority to CS867824ApriorityCriticalpatent/CS258172B1/en
Priority to SU877774544Aprioritypatent/SU1601226A1/en
Publication of CS782486A1publicationCriticalpatent/CS782486A1/en
Publication of CS258172B1publicationCriticalpatent/CS258172B1/en