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PCE
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DIFF Subgroup
G01C 7/06

of cavities, e.g. tunnels

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Tracing profiles > of cavities, e.g. tunnels

CPC:

Tracing profiles (by photogrammetry or videogrammetry G01C11/00) > of cavities, e.g. tunnels

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