IPC Definitions - January 01, 2012
H02K 9/00 - Definition
This main group covers:
Systems for cooling or ventilating.
References relevant to classification in this main group
This main group does not cover:
Channels or ducts in parts of the magnetic circuit | H02K 1/20, H02K 1/32 |
Channels or ducts in or between conductors | H02K 3/22, H02K 3/24 |