US2618699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telegraph system
Assignee: British Telecommunications PLC
•
Filing: 1947-10-29
•
Granted: 1952-11-18
•
Expires: 1967-10-29
Abstract
No abstract record available.
Inventors
- 👤 Dain Gordon Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:56
CPC Classifications
H; H04; H04L; H04L12/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2110015A
Cited
US1943475A
Cited
US2094733A
Cited
US2193810A
Cited
US2300045A
Cited
US2334574A
Cited
US2384558A
Cited
US2441145A
Cited
US2424571A
Cited
US2419581A
Cited
US2485551A
Cited
US2487186A
Cited
US2501592A
Cited
US2481112A
Cited
US2470677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |