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
Application filed by А.С. Сипягин, гин А.С. СипfiledCriticalА.С. Сипягин
Priority to SU78311ApriorityCriticalpatent/SU2160A1/ru
Application grantedgrantedCritical
Publication of SU2160A1publicationCriticalpatent/SU2160A1/ru