Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Subgroup
H04M 17/02

Coin-freed or check-freed systems

Introduced: September 1968

Last revised: January 2006

Full Title

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

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC COMMUNICATION TECHNIQUE
Subclass:
TELEPHONIC COMMUNICATION

Related Keywords

COIN(S) -freed apparatus in telephone systems