IPC Subgroup
F28F 5/04 Hollow impellers, e.g. stirring vane
Introduced: September 1968
Last revised: January 2006
Full Title
Elements specially adapted for movement > Hollow impellers, e.g. stirring vane
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