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Publication date
Application filed by Ю.К. МашковfiledCriticalЮ.К. Машков
Priority to SU1771649/06ApriorityCriticalpatent/RU411221C/en
Priority claimed from SU1771649/06Aexternal-prioritypatent/RU411221C/en
Application grantedgrantedCritical
Publication of SU411221A1publicationCriticalpatent/SU411221A1/en
Publication of RU411221CpublicationCriticalpatent/RU411221C/en