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PCE
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DIFF Subgroup
E21D 11/40

Devices or apparatus specially adapted for handling or placing units of linings for tunnels or galleries

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings , e.g. by assembling > Devices or apparatus specially adapted for handling or placing units of linings for tunnels or galleries

CPC:

Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling (E21D15/00 - E21D23/00 take precedence; specially for shafts E21D5/00; ; lining pressure water galleries, linings therefor E02B9/06) > Devices or apparatus specially adapted for handling or placing units of linings for tunnels or galleries

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

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