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Application grantedgrantedCritical
Publication of SU54822A1publicationCriticalpatent/SU54822A1/en
Application filed by Л.И. СоколоваfiledCriticalЛ.И. Соколова
Priority to SU799ApriorityCriticalpatent/SU64806A1/en
Priority claimed from SU799Aexternal-prioritypatent/SU64806A1/en
Publication of SU64806A1publicationCriticalpatent/SU64806A1/en