IPC Main Group
A62B 23/00 Filters for breathing-protection purposes
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- LIFE-SAVING; FIRE-FIGHTING
- Subclass:
- DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
Related Keywords
FILTER(S) for breathing-protection purposes
3 direct subcodes
Child Classifications
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- A62B 23/02 for respirators
- A62B 23/04 for gasproof shelters
- A62B 23/06 Nose filters