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Application filed by Г.И. Еремеев, В.А. Прощин, А.В. РизоватовfiledCriticalГ.И. Еремеев
Priority to SU371738ApriorityCriticalpatent/SU73480A1/en
Application grantedgrantedCritical
Publication of SU73480A1publicationCriticalpatent/SU73480A1/en