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Application filed by Shchedov Anatolij K, Tuzankin Yurij MfiledCriticalShchedov Anatolij K
Priority to SU6601046292ApriorityCriticalpatent/SU572584A2/ru
Application grantedgrantedCritical
Publication of SU572584A2publicationCriticalpatent/SU572584A2/ru