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.С. ПетровfiledCriticalГ.С. Петров
Priority to SU15574ApriorityCriticalpatent/SU15284A1/ru
Application grantedgrantedCritical
Publication of SU15284A1publicationCriticalpatent/SU15284A1/ru