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 С.М. Бреслер, А.Н. МихайловfiledCriticalС.М. Бреслер
Priority to SU388857ApriorityCriticalpatent/SU77532A1/ru
Application grantedgrantedCritical
Publication of SU77532A1publicationCriticalpatent/SU77532A1/ru