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 Л.С. ГублерfiledCriticalЛ.С. Гублер
Priority to SU128764ApriorityCriticalpatent/SU43322A1/ru
Application grantedgrantedCritical
Publication of SU43322A1publicationCriticalpatent/SU43322A1/ru