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 Michail Michajlovic Dyckin, Alexandr Vladimirovi NikiforovfiledCriticalMichail Michajlovic Dyckin
Priority to CS882436ApriorityCriticalpatent/CS243688A1/en
Publication of CS243688A1publicationCriticalpatent/CS243688A1/en