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Application filed by Е. И. Андреев, Ю. В. Беленький , Г. И. БерлинковfiledCriticalЕ. И. Андреев, Ю. В. Беленький , Г. И. Берлинков
Priority to SU1865763ApriorityCriticalpatent/SU435585A1/ru
Application grantedgrantedCritical
Publication of SU435585A1publicationCriticalpatent/SU435585A1/ru