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 Г.В. БрахманfiledCriticalГ.В. Брахман
Priority to SU39251ApriorityCriticalpatent/SU63439A1/ru
Application grantedgrantedCritical
Publication of SU63439A1publicationCriticalpatent/SU63439A1/ru