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 Э.В. БрицкеfiledCriticalЭ.В. Брицке
Priority to SU77942ApriorityCriticalpatent/SU4149A1/ru
Application grantedgrantedCritical
Publication of SU4149A1publicationCriticalpatent/SU4149A1/ru