| AECo |
Automatic Electric Company, Chicago, USA. |
| AEI |
Associated Electrical Industries (successor to Siemens
Brothers). |
| AEP |
Automatica
Electrica Portuguesa (Portuguese subsidiary of ATM Ltd) |
| ATE |
Automatic Telephone & Electric (ATM was renamed ATE in
1936). |
| ATM |
Automatic Telephone Manufacturing Company. |
| Autelco |
Automatic Electric Company, Chicago, USA. |
| AWA |
Amalgamated Wireless Australasia. |
| BHOTCo |
British Home & Office Telephone Company. |
| BTM,
BTMC |
Bell Telephone Manufacturing Company, Belgium. |
| BWE |
hobbyist expression for British Western Electric (see WECo) |
| Centrel |
Portuguese manufacture that acquired the assets of the
Plessey factory in Portugal for £1 in 1979. It made 700-type telephones
under licence. |
| CS |
Communication Systems Ltd (ATE subsidiary). |
| DeTeWe |
Deutsche Telephon Werke, Germany. |
| Etelco, ETL |
Ericsson Telephones Ltd. |
| GEC |
General Electric Company Ltd. |
| H&BIWC |
Helsby & British Insulated Wire Company. |
| K&S |
Kapsch & Shne, Austria. |
| LME |
L.M. Ericsson, Sweden. |
| MT |
Merk
Telefonbau (or similar), Germany (T&N was the parent firm). |
| PTEW |
Phoenix Telephone & Electrical Works. |
| RATCo |
Relay Automatic Telephone Company. |
| RTC |
Reliance Telephone Company. |
| SB & Co. |
Siemens Brothers & Company. |
| S & H, S-H |
Siemens & Halske, Germany (no connection with SB &
Co after 1914). |
| SER |
Svenska Elektron Rr (an LM Ericsson subsidiary). |
| STC |
Standard Telephones & Cables . |
| TEL |
What many people mistakenly assume the ETL symbol means. |
| T&N |
Telefonbau & Normalzeit GmbH, Germany (Telephone
Construction & Standard Time Company). |
| TMC |
Telephone Manufacturing Company. |
| WECo |
Western Electric Company (UK subsidiary became STC in late
1920s). |