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 В.Я. СлезингерfiledCriticalВ.Я. Слезингер
Priority to SU55513ApriorityCriticalpatent/SU17690A1/ru
Application grantedgrantedCritical
Publication of SU17690A1publicationCriticalpatent/SU17690A1/ru