US2508657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerial system
Assignee: Decca Record Co Ltd
•
Filing: 1946-11-07
•
Granted: 1950-05-23
•
Expires: 1966-11-07
Abstract
No abstract record available.
Inventors
- 👤 Toller-Bond Dudley Hales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:56
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q9/00; H01Q9/04; H01Q9/30; H01Q9/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US423067A
Cited
GB248597A
Cited
US1639727A
Cited
US2014784A
Cited
US2263460A
Cited
US2062846A
Cited
US2278560A
Cited
US2267613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |