US3030053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft control systems
Assignee: Rolls Royce PLC
•
Filing: 1956-08-25
•
Granted: 1962-04-17
•
Expires: 1976-08-25
Abstract
No abstract record available.
Inventors
- 👤 Smith Alfred John
- 👤 Metcalf Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:22
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1997412A
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US2415092A
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US2479549A
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US2496294A
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US2558850A
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US2650046A
Cited
US2751542A
Cited
US2799461A
Cited
US2830291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |