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 Ф.Е. Костянко, нко Ф.Е. КостfiledCriticalФ.Е. Костянко
Priority to SU129101ApriorityCriticalpatent/SU34929A1/en
Application grantedgrantedCritical
Publication of SU34929A1publicationCriticalpatent/SU34929A1/en