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.А. Потеряхин, хин И.А. ПотерfiledCriticalИ.А. Потеряхин
Priority to SU43899ApriorityCriticalpatent/SU66747A1/ru
Application grantedgrantedCritical
Publication of SU66747A1publicationCriticalpatent/SU66747A1/ru