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 Е.М. МашниковfiledCriticalЕ.М. Машников
Priority to SU4226ApriorityCriticalpatent/SU63761A1/en
Application grantedgrantedCritical
Publication of SU63761A1publicationCriticalpatent/SU63761A1/en