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.)
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Application filed by Я.А. ОсташевскийfiledCriticalЯ.А. Осташевский
Priority to SU602338ApriorityCriticalpatent/SU119327A1/en
Application grantedgrantedCritical
Publication of SU119327A1publicationCriticalpatent/SU119327A1/en