US2683574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed aircraft having adjustable swept-back wings
Assignee: Individual
•
Filing: 1950-03-31
•
Granted: 1954-07-13
•
Expires: 1970-03-31
Abstract
No abstract record available.
Inventors
- 👤 Adolphe C Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:12
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/38; B64C3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1859716A
Cited
US1718617A
Cited
US1998148A
Cited
US2074897A
Cited
GB526162A
Cited
US2579840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |