US2724772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft radio antennae
Assignee: Decca Record Co Ltd
•
Filing: 1951-05-07
•
Granted: 1955-11-22
•
Expires: 1971-05-07
Abstract
No abstract record available.
Inventors
- 👤 Bridges Donald Edward
- 👤 O'brien William Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:34
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2279130A
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US2414266A
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US2368663A
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US2488419A
Cited
US2457123A
Cited
GB630873A
Cited
US2549783A
Cited
US2431124A
Cited
US2508085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |