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Application filed by К.О. КоровицынfiledCriticalК.О. Коровицын
Priority to SU4633267/12ApriorityCriticalpatent/SU1593310A1/ru
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Publication of RU1593310CpublicationCriticalpatent/RU1593310C/ru
Publication of SU1593310A1publicationCriticalpatent/SU1593310A1/ru