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 А.И. ГерценбергfiledCriticalА.И. Герценберг
Priority to SU40294ApriorityCriticalpatent/SU13744A1/ru
Application grantedgrantedCritical
Publication of SU13744A1publicationCriticalpatent/SU13744A1/ru