IPC Subgroup
C22B 11/12 Apparatus therefor
Introduced: September 1968
Last revised: January 2006
Full Title
Obtaining noble metals > by amalgamating > Apparatus therefor
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- Subclass:
- PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS