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PCE
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DIFF Subgroup
G01N 21/87

Investigating jewels (G01N21/88 takes precedence)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Investigating jewels

CPC: Investigating jewels (G01N21/88 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light > Systems specially adapted for particular applications > Investigating jewels

CPC:

Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light (G01N3/00 - G01N19/00 take precedence) > Systems specially adapted for particular applications > Investigating jewels (G01N21/88 takes precedence)

No child classifications to compare. This is a leaf node in both IPC and CPC.