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PCE
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DIFF Main Group
E21D 19/00

Provisional protective covers for working space (E21D9/06, E21D23/00 take precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Provisional protective covers for working space

CPC: Provisional protective covers for working space (E21D9/06, E21D23/00 take precedence)

Full Title

Full titles differ between systems:

IPC:

Provisional protective covers for working space

CPC:

Provisional protective covers for working space (E21D9/06, E21D23/00 take precedence)

Of 3 combined children, 2 exist in both systems.

1 codes exist only in IPC.

Child Classifications

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  • E21D 19/02 for use in longwall working IPC+CPC Available in IPC and CPC
  • E21D 19/04 for use in drifting galleries IPC+CPC Available in IPC and CPC
  • E21D 19/06 Arrangements for applying the covers since 1995 IPC only IPC only