IPC Subgroup
G01N 33/4 Grinding-materials
Introduced: September 1968
Last revised: January 2006
Full Title
Investigating or analysing materials by specific methods not covered by groups > Grinding-materials
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES