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 Е.В. Рогинская, Е.В. РогинскаfiledCriticalЕ.В. Рогинская
Priority to SU92967ApriorityCriticalpatent/SU34675A1/en
Application grantedgrantedCritical
Publication of SU34675A1publicationCriticalpatent/SU34675A1/en