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 И.Л. НеймаркfiledCriticalИ.Л. Неймарк
Priority to SU4099ApriorityCriticalpatent/SU72078A1/ru
Application grantedgrantedCritical
Publication of SU72078A1publicationCriticalpatent/SU72078A1/ru