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Application filed by Sp K B Pri Belovskom Z Kuzbass, Kh Polt I Im V I LeninafiledCriticalSp K B Pri Belovskom Z Kuzbass
Priority to SU884405139ApriorityCriticalpatent/SU1568096A1/ru
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Publication of SU1568096A1publicationCriticalpatent/SU1568096A1/ru