Patent US2677119A successfully refreshed from Google Patents.
US2677119A
Expired / Lapsed
US
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Ground controlled aircraft communication system
Assignee: RCA Corp
•
Filing: 1950-07-24
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Granted: 1954-04-27
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Expires: 1970-07-24
Abstract
No abstract record available.
Inventors
- 👤 Luck David George Croft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:57
CPC Classifications
G; G08; G08G; G08G5/00; G08G5/20; G08G5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1786805A
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US2181682A
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US2248822A
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US2392355A
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US2477973A
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US2440118A
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US2497936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |