US2747597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel drop tank valve
Assignee: Aro Equipment Corp
•
Filing: 1951-10-29
•
Granted: 1956-05-29
•
Expires: 1971-10-29
Abstract
No abstract record available.
Inventors
- 👤 John W Keckler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:26
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/168; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/20; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2557; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2607; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7794; Y10T137/7837; Y10T137/7838; Y10T137/7842
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |