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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H04M 17/02

Coin-freed or check-freed systems

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Prepayment telephone systems > Coin-freed or check-freed systems

CPC:

Prepayment telephone systems (using a coded card to authorise calls from a telephone set H04M1/675) > Coin-freed or check-freed systems

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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