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 М. С. ЧерненкоfiledCriticalМ. С. Черненко
Priority to SU1788377ApriorityCriticalpatent/SU421817A1/ru
Priority claimed from SU1788377Aexternal-prioritypatent/SU421817A1/ru
Application grantedgrantedCritical
Publication of SU421817A2publicationCriticalpatent/SU421817A2/ru
Publication of SU421817A1publicationCriticalpatent/SU421817A1/ru