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 Э.М. РубчинскийfiledCriticalЭ.М. Рубчинский
Priority to SU123024ApriorityCriticalpatent/SU39223A1/en
Application grantedgrantedCritical
Publication of SU39223A1publicationCriticalpatent/SU39223A1/en