British Telecommunications PLC
British TeActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB1168476A | Improvements in or relating to data transmission systems | Expired / Lapsed | 1966-05-17 | — | 0 | Details |
| GB654313A | Improvements in or relating to electronic counting circuits | Expired / Lapsed | 1948-08-26 | — | 0 | Details |
| US5651095A | Speech synthesis using word parser with knowledge base havi… | Expired / Lapsed | 1994-02-08 | 1997-07-22 | 16 | Details |
| US4802727A | Positioning optical components and waveguides | Expired / Lapsed | 1986-10-16 | 1989-02-07 | 14 | Details |
| US2805286A | Electrical signalling systems | Expired / Lapsed | 1952-07-23 | 1957-09-03 | 0 | Details |
| US2718593A | Crystal-controlled electric oscillation generators | Expired / Lapsed | 1950-07-03 | 1955-09-20 | 0 | Details |
| US2612562A | Telegraph distributor | Expired / Lapsed | 1949-06-10 | 1952-09-30 | 0 | Details |
| US2612563A | Telegraph distributor | Expired / Lapsed | 1949-06-10 | 1952-09-30 | 0 | Details |
| US2585079A | Signal generator | Expired / Lapsed | 1950-09-29 | 1952-02-12 | 0 | Details |
| US2581056A | Signal transmission system | Expired / Lapsed | 1949-05-11 | 1952-01-01 | 0 | Details |