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Application filed by Г.В. Богомолов, И.С. ОсиповfiledCriticalГ.В. Богомолов
Priority to SU116315ApriorityCriticalpatent/SU33112A1/en
Application grantedgrantedCritical
Publication of SU33112A1publicationCriticalpatent/SU33112A1/en