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 Jurij N Petrov, Jurij S Potapov, Vasilij D Kralja, Anatolij P KorostilfiledCriticalJurij N Petrov
Priority to CS832473ApriorityCriticalpatent/CS245497B1/en
Publication of CS247383A1publicationCriticalpatent/CS247383A1/en
Publication of CS245497B1publicationCriticalpatent/CS245497B1/en