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PCE
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DIFF Subgroup
H04M 1/23

Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof (by improving visibility H04M1/22)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

CPC: Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof (by improving visibility H04M1/22)

Full Title

Full titles differ between systems:

IPC:

Substation equipment, e.g. for use by subscribers > Constructional features of telephone sets > Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

CPC:

Substation equipment, e.g. for use by subscribers (subscriber services or facilities provided at exchanges H04M3/00; prepayment telephone coin boxes H04M17/00; current supply arrangements H04M19/08) > Constructional features of telephone sets > Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof (by improving visibility H04M1/22)

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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