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 П.К. Кориковский, В.Е. СоловьевfiledCriticalП.К. Кориковский
Priority to SU2675ApriorityCriticalpatent/SU70040A1/en
Application grantedgrantedCritical
Publication of SU70040A1publicationCriticalpatent/SU70040A1/en