US2914669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic switches
Assignee: Marconis Wireless Telegraph Co Ltd
•
Filing: 1955-01-20
•
Granted: 1959-11-24
•
Expires: 1975-01-20
Abstract
No abstract record available.
Inventors
- 👤 Wright Peter Maurice
- 👤 Sale Anthony Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:10
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2092496A
Cited
US2531201A
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GB630123A
Cited
GB643471A
Cited
US2583146A
Cited
US2570225A
Cited
US2571017A
Cited
US2586957A
Cited
US2599675A
Cited
US2695956A
Cited
US2710348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |