00618naa#a2200193#i#450# EN\\bibl\66631 20251209074232.2 1998-8990 20150325b2015####ek#y0engy0150####ca RUS RU EXCLUSIVE PATENT: CHALLENGE AGAINST THE VALIDITY OF GRANTING THE TITLE OF PROTECTION Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2015 5 с. Journal article local Greshnykh A A Kozhevnikov D A Chernoles V P journals.igps.ru