combined with perforating apparatus

Full Title

Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code > Apparatus or circuits at the transmitting end > with a restricted number of keys, e.g. separate key for each type of code element > combined with perforating apparatus

Classification Context

Section:

ELECTRICITY

Class:

ELECTRIC COMMUNICATION TECHNIQUE

Subclass:

TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION