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Application filed by Boris P Lipov, Arkadij Yu Parmenov, Yurij A Parmenov, Igor N SafronovfiledCriticalBoris P Lipov
Priority to SU914912191ApriorityCriticalpatent/RU1785702C/ru
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Publication of RU1785702CpublicationCriticalpatent/RU1785702C/ru