Cooperative Patent Classification


Version: 2018.08
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CPC
COOPERATIVE PATENT CLASSIFICATION
F24V
COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR [2018-05]
F24V 30/00
Apparatus or devices using heat produced by exothermal chemical reactions other than combustion [2018-05]
F24V 40/00
Production or use of heat resulting from internal friction of moving fluids or from friction between fluids and moving bodies [2018-05]
F24V 40/10
.
the fluid passing through restriction means [2018-05]
F24V 50/00
Use of heat from natural sources, e.g. from the sea [2018-05]
F24V 99/00
Subject matter not provided for in other main groups of this subclass [2018-05]