FI-MainGroup/Facet-Choice

  • F24V30/00
  • Apparatus or devices using heat produced by exothermal chemical reactions other than by combustion [2018.01] HB CC 3L039
  • F24V40/00
  • Production or use of heat resulting from internal friction of moving fluids or from friction between fluids and moving bodies [2018.01] HB CC 3L039
  • F24V50/00
  • Use of heat from natural sources, e.g. from the sea [2018.01] HB CC 3L039
  • F24V99/00
  • Subject matter not provided for in other main groups of this subclass [2018.01] HB CC 3L039
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