Patent US2249339A successfully refreshed from Google Patents.
US2249339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachably connected pumping assembly for aircraft
Assignee: Boeing Co
•
Filing: 1938-07-19
•
Granted: 1941-07-15
•
Expires: 1958-07-19
Abstract
No abstract record available.
Inventors
- 👤 Edward C Wells
- 👤 Wellwood E Beall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:34
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/16; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6906; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-07-14 | 1945-01-13 | 1945-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-14 | 1949-01-13 | 1949-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-14 | 1953-01-13 | 1953-07-15 | $7700.00 | Window Closed / Lapsed |