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 И.В. Зельдич, П.Г. СолодовниковfiledCriticalИ.В. Зельдич
Priority to SU28444ApriorityCriticalpatent/SU17001A1/ru
Application grantedgrantedCritical
Publication of SU17001A1publicationCriticalpatent/SU17001A1/ru