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 А.П. АгафоновfiledCriticalА.П. Агафонов
Priority to SU129137ApriorityCriticalpatent/SU40478A1/en
Application grantedgrantedCritical
Publication of SU40478A1publicationCriticalpatent/SU40478A1/en