US2570880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio beacon for aircraft
Assignee: The General Electric Company PLC
•
Filing: 1947-06-21
•
Granted: 1951-10-09
•
Expires: 1967-06-21
Abstract
No abstract record available.
Inventors
- 👤 Stenning Luis Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:29
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US833034A
Cited
GB161448A
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US1815246A
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US1988006A
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US2210651A
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US2141282A
Cited
US2257320A
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US2252699A
Cited
US2368318A
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US2377902A
Cited
US2422110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |