US2923249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pump with pressure loaded end plate and with pressure loaded peripheral tooth sealing means
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1954-02-04
•
Granted: 1960-02-02
•
Expires: 1974-02-04
Abstract
No abstract record available.
Inventors
- 👤 Donald L Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:14
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/086; F04C15/00; F04C15/0003; F04C15/0007; F04C15/0019; F04C15/0023; F04C15/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1880108A
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US2504230A
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US2622534A
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US2639694A
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US2624287A
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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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |