US2688925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed flow multiple pump
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1950-09-27
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Granted: 1954-09-14
•
Expires: 1970-09-27
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Thoren
- 👤 John F Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:38
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F02; F02M; F02M17/00; F02M17/18; F02M37/00; F02M37/04; F02M37/041; F04C11/00; F04C11/005; F04D; F04D13/00; F04D13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1927799A
Cited
US2196500A
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US2055587A
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US2409931A
Cited
US2500228A
Cited
US2500227A
Cited
US2581886A
Cited
US2487732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |