US2681778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel storage system for aircraft
Assignee: Individual
•
Filing: 1950-09-29
•
Granted: 1954-06-22
•
Expires: 1970-09-29
Abstract
No abstract record available.
Inventors
- 👤 Landrum L Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:00
CPC Classifications
B; B64; B64D; B64D37/00; B64D37/02; B64D37/06; B64D37/10; Y; Y02; Y02T; Y02T50/00; Y02T50/40
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1876620A
Cited
US1311076A
Cited
US1650346A
Cited
US1865859A
Cited
GB398244A
Cited
US2041450A
Cited
US2105307A
Cited
GB462904A
Cited
US2110731A
Cited
US2138970A
Cited
US2403749A
Cited
US2414909A
Cited
US2474974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |