IPC Main Group
F28F 23/00 Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- HEAT EXCHANGE IN GENERAL
- Subclass:
- DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
1 direct subcode
Child Classifications
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- F28F 23/02 Arrangements for obtaining or maintaining same in a liquid state