BRITISH TELECOMMUNICATION
Patent Applications and Registrations
Patent applications and USPTO patent grants for BRITISH TELECOMMUNICATION.The latest application filed is for "subscriber line validation of a telephone network".
- BRITISH TELECOMMUNICATION - 81 NEWGATE STREET LONDON GB
- British Telecommunication - GB3 GB3
| Patent | Date |
|---|---|
| Subscriber line validation of a telephone network App 20050207540 - Gunn, Christopher W. ; et al. | 2005-09-22 |
| Optical receiver circuit including a filter network to minimize noise Grant 4,959,535 - Garrett September 25, 1 | 1990-09-25 |
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