US2800082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable volume pump
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1955-10-27
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Granted: 1957-07-23
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Expires: 1975-10-27
Abstract
No abstract record available.
Inventors
- 👤 Leslie L Aspelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:09
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/005; F04B1/00; F04B1/12; F04B1/20; F04B1/22; F04B1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |