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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Application filed by Г.С. Гончаров, Я.Г. Муравин, Б.Н. РутовскийfiledCriticalГ.С. Гончаров
Priority to SU375781ApriorityCriticalpatent/SU75536A1/ru
Application grantedgrantedCritical
Publication of SU75536A1publicationCriticalpatent/SU75536A1/ru