Devices whereby a plurality of signals may be stored simultaneously

Full Title

Substation equipment, e.g. for use by subscribers > Devices for calling a subscriber > Devices whereby a plurality of signals may be stored simultaneously

Classification Context

Section:

ELECTRICITY

Class:

ELECTRIC COMMUNICATION TECHNIQUE

Subclass:

TELEPHONIC COMMUNICATION

Child Classifications

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• H04M 1/272 with provision for storing only one subscriber number at a time, e.g. by keyboard or dial
• H04M 1/274 with provision for storing more than one subscriber number at a time