DIFF Subgroup
G01N 33/24 Earth materials (G01N33/42 takes precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Earth materials
CPC: Earth materials (G01N33/42 takes precedence)
Full Title
Full titles differ between systems:
IPC:
Investigating or analysing materials by specific methods not covered by groups > Earth materials
CPC:
Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00 > Earth materials (G01N33/42 takes precedence)
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Child Classifications
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