This page displays all 「FI」 in main group E21B36/00. HB:Handbook CC:Concordance ReturnTo FI-Section/Broad-Facet-Choice Onelevelup E21B36/00 Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones [2006.01] HB CC 2D129 E21B36/02 .using burners [3] HB CC 2D129 E21B36/04 .using electrical heaters [3] HB CC 2D129 TOP
E21B36/00 Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones [2006.01] HB CC 2D129 E21B36/02 .using burners [3] HB CC 2D129 E21B36/04 .using electrical heaters [3] HB CC 2D129