US2686609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary tip fuel tank
Assignee: FLETCHER AVIAT CORP
•
Filing: 1948-12-06
•
Granted: 1954-08-17
•
Expires: 1968-12-06
Abstract
No abstract record available.
Inventors
- 👤 Wendell S Flctcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:33
CPC Classifications
B; B64; B64D; B64D37/00; B64D37/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |