Patent US2755046A successfully refreshed from Google Patents.
US2755046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft fuel load equalizing system
Assignee: Individual
•
Filing: 1954-10-25
•
Granted: 1956-07-17
•
Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Jr John L Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:08
CPC Classifications
B; B64; B64C; B64C17/00; B64C17/10; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1266029A
Cited
US1574567A
Cited
US2124867A
Cited
US2509629A
Cited
US2585480A
Cited
US2514888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |