US2726604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed flow multiple pump
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1951-06-15
•
Granted: 1955-12-13
•
Expires: 1971-06-15
Abstract
No abstract record available.
Inventors
- 👤 Leslie L Aspelin
- 👤 John F Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:22
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/12; F04C; F04C11/00; F04C11/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1379587A
Cited
US2013078A
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US2055587A
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US2214390A
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US2538982A
Cited
US2620733A
Cited
US2570698A
Cited
US2505191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-12 | 1959-06-13 | 1959-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-12 | 1963-06-13 | 1963-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-12 | 1967-06-13 | 1967-12-13 | $7700.00 | Window Closed / Lapsed |