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 Я.Я. Макаров-Землянский, нский Я.Я. Макаров-ЗемлfiledCriticalЯ.Я. Макаров-Землянский
Priority to SU74119ApriorityCriticalpatent/SU23972A1/en
Application grantedgrantedCritical
Publication of SU23972A1publicationCriticalpatent/SU23972A1/en