Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Publication of SU222042A1publicationCriticalpatent/SU222042A1/en
Application filed by С.Т. СиницынfiledCriticalС.Т. Синицын
Priority to SU114051ApriorityCriticalpatent/SU30033A1/en
Application grantedgrantedCritical
Publication of SU30033A1publicationCriticalpatent/SU30033A1/en