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 Alexej A Redin, Leonid D Dubinin, Alexandr J DonskichfiledCriticalAlexej A Redin
Priority to CS82532ApriorityCriticalpatent/CS239336B1/en
Publication of CS53282A1publicationCriticalpatent/CS53282A1/en
Publication of CS239336B1publicationCriticalpatent/CS239336B1/en