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 Н.В. ВологодскийfiledCriticalН.В. Вологодский
Priority to SU2807330/24ApriorityCriticalpatent/RU797295C/en
Priority claimed from SU2807330/24Aexternal-prioritypatent/RU797295C/en
Application grantedgrantedCritical
Publication of SU797295A1publicationCriticalpatent/SU797295A1/en
Publication of RU797295CpublicationCriticalpatent/RU797295C/en