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Filing date
Publication date
Application filed by В. И. Черныш, А. М. ЧернышfiledCriticalВ. И. Черныш
Priority to SU1691261ApriorityCriticalpatent/SU432659A2/en
Application grantedgrantedCritical
Publication of SU432659A1publicationCriticalpatent/SU432659A1/en
Publication of SU432659A2publicationCriticalpatent/SU432659A2/en