Telephone systems

814,598. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. April 16, 1957 [April 28, 1956], No. 29422/58. Divided out of 814,597. Drawings to Specification. Class 40 (4). At any one of a number of predetermined stages in the operation of equipment which scans subscribers'...

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Bibliographische Detailangaben

Hauptverfasser:	DAVISON ALAN, ALLEN LESLIE JOHN
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY SELECTING
Online-Zugang:	Volltext bestellen
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