US2972308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed stator submerged electric fuel pump
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1957-03-12
•
Granted: 1961-02-21
•
Expires: 1977-03-12
Abstract
No abstract record available.
Inventors
- 👤 John L Haggerty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:27
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F02M37/10; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/16
Claims Analysis
Total Claims: 0
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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) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |