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 Л.М. МандрыкоfiledCriticalЛ.М. Мандрыко
Priority to SU141077ApriorityCriticalpatent/SU44171A1/en
Application grantedgrantedCritical
Publication of SU44171A1publicationCriticalpatent/SU44171A1/en