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. Гольдберг, Г.М. НемировскийfiledCriticalК.М. Гольдберг
Priority to SU4141ApriorityCriticalpatent/SU13782A1/ru
Application grantedgrantedCritical
Publication of SU13782A1publicationCriticalpatent/SU13782A1/ru