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 К.М. ГольдбергfiledCriticalК.М. Гольдберг
Priority to SU??-0308ApriorityCriticalpatent/SU51747A1/ru
Application grantedgrantedCritical
Publication of SU51747A1publicationCriticalpatent/SU51747A1/ru