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 И.В. ИсарfiledCriticalИ.В. Исар
Priority to SU92874ApriorityCriticalpatent/SU26315A1/ru
Application grantedgrantedCritical
Publication of SU26315A1publicationCriticalpatent/SU26315A1/ru