IPC Definitions - January 01, 2012
B01D 51/00 - Definition
Relationship between large subject matter areas
Preventing dust fires is classified in subclass A62C
References relevant to classification in this main group
This main group does not cover:
Pretreatment specially adapted for magnetic separation | B03C 1/005 |
Pretreatment specially adapted for electrostatic separation | B03C 3/01 |