US2943828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal aerodynamic drag controller
Assignee: North American Aviation Corp
•
Filing: 1956-08-07
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Granted: 1960-07-05
•
Expires: 1976-08-07
Abstract
No abstract record available.
Inventors
- 👤 Edward R Van Driest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:56
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/10; Y; Y02; Y02T; Y02T50/00; Y02T50/10; Y10; Y10S; Y10S62/00; Y10S62/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR435653A
Cited
US2427972A
Cited
US2529102A
Cited
GB612468A
Cited
US2540594A
Cited
GB687872A
Cited
US2723092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |