US2844338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical velocity thrust control for hovering v. t. o. aircraft
Assignee: Teledyne Ryan Aeronautical Corp
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Filing: 1956-01-03
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Granted: 1958-07-22
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Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Ivan W Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:25
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2743071A
Cited
GB955254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |