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.)
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Publication date
Priority claimed from SU1670584Aexternal-prioritypatent/SU383300A1/ru
Priority claimed from DE19691918071external-prioritypatent/DE1918071A1/de
Application filedfiledCritical
Priority to SU1670583ApriorityCriticalpatent/SU378013A3/ru
Application grantedgrantedCritical
Publication of SU383300A3publicationCriticalpatent/SU383300A3/ru