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
Application filed by И.Е. ГайсинскийfiledCriticalИ.Е. Гайсинский
Priority to SU860ApriorityCriticalpatent/SU74083A1/ru
Application grantedgrantedCritical
Publication of SU74083A1publicationCriticalpatent/SU74083A1/ru