US3068804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure loaded pump seal
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1960-03-21
•
Granted: 1962-12-18
•
Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 John E Thrap
- 👤 Herbert F Prasse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:05
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0023; F04C15/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2702509A
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US2728301A
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FR1060496A
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US2696172A
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US2787224A
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US2809592A
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GB769763A
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US2824524A
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GB782701A
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US2967487A
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US3003426A
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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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |