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.Я. Пестовский, В.Д. ПотаповfiledCriticalИ.Я. Пестовский
Priority to SU101350ApriorityCriticalpatent/SU37781A1/ru
Application grantedgrantedCritical
Publication of SU37781A1publicationCriticalpatent/SU37781A1/ru