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.Н. Мерзляк, к А.Н. МерзлfiledCriticalА.Н. Мерзляк
Priority to SU3805ApriorityCriticalpatent/SU73787A1/ru
Application grantedgrantedCritical
Publication of SU73787A1publicationCriticalpatent/SU73787A1/ru