ARRANGEMENT FOR CLEANING FIRE GRATE
OREKHOVSKAYA NATALYA V,SU, MINUKHIN LEONID B,SU, TYKVA PETR YA,SU, FLEJSHMAN FILIPP A,SU, GAVRILENKO IGOR A,SU, KALASHNIKOV SERGEJ L,SU, UCHITEL ALEKSANDR D,SU
Year of Publication 15.06.1988
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Year of Publication 15.06.1988
Patent