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Application filed by Проектно-Технологический Институт "Оргпромстрой"filedCriticalПроектно-Технологический Институт "Оргпромстрой"
Priority to SU1971190ApriorityCriticalpatent/SU483360A1/ru
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Publication of SU483360A1publicationCriticalpatent/SU483360A1/ru