US2887959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged booster pump
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1951-02-17
•
Granted: 1959-05-26
•
Expires: 1971-02-17
Abstract
No abstract record available.
Inventors
- 👤 Stefano John F Di
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:26
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/001; F04D9/002; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/16; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F02M37/10; F02M37/18; F02M37/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1143957A
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US1683949A
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GB348032A
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US1893614A
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US2368529A
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US2442639A
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US2368530A
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GB585505A
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US2427716A
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GB607830A
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US2575568A
Cited
US2624286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |