US2979833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft training apparatus for simulating the propeller system of turbopropeller aircraft
Assignee: Curtiss Wright Corp
•
Filing: 1957-12-05
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Granted: 1961-04-18
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Expires: 1977-12-05
Abstract
No abstract record available.
Inventors
- 👤 Roscoe H Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:00
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/16; G09B9/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1960350A
Cited
US2397477A
Cited
US2506949A
Cited
US2608005A
Cited
US2798308A
Cited
US2788589A
Cited
US2824388A
Cited
US2804698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |