ALFRED GRAHAM ANGLO PORTUGUESE TELEPHONE COMPANY - APT AUDIOLINE AUTOMATIC ELECTRIC COMPANY AEI ATEA AUTOMATIC TELEPHONE COMPANY BELL TELEPHONE MANUFACTURING COMPANY (BTMC) BERLINER BIRKBYS PLASTICS BPO - GPO - PO - BT BRITISH ERICSSON - ETL BRITISH INSULATED & HELSBY CABLES BRITISH POST OFFICE TELEPHONES CABLE & WIRELESS DENNIS FERRANTI METERS Ltd DORO ERICSSON TELEPHONES Ltd (ETL) GEC GEC - The Telephone Works GOWER-BELL HULL IRISH TELEPHONES L. M. ERICSSON MERCURY COMMUNICATION METROPOLITAN-VICKERS MITEL NATIONAL TELEPHONE COMPANY PLESSEY PEEL CONNER SIEMENS AG SIEMENS BROTHERS SIEMENS AND HALSKE STC - PROPOSED ACQUISITION BY ALCATEL STANDARD TELEPHONES AND CABLES (STC) STERLING TELEPHONE COMPANY STROWGER AUTOMATIC TELEPHONE COMPANY TELECOM SCIENCES CORPORATION Ltd TELEPHONE RENTALS TELEPHONE MANUFACTURING COMPANY (TMC) UK COMMUNICATIONS HISTORY UNITED TELEPHONE COMPANY WESTERN ELECTRIC Co. Ltd. (UK)
