Patent US3052189A successfully refreshed from Google Patents.
US3052189A
Expired / Lapsed
US
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Pressure balancing and compensating device for an hydraulic pump
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1960-02-23
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Granted: 1962-09-04
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Expires: 1980-02-23
Abstract
No abstract record available.
Inventors
- 👤 George W Head
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:00
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04C14/223; F04C15/00; F04C15/0003; F04C15/0023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2044873A
Cited
US2312891A
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US2631544A
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US2642802A
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US2682836A
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US2782724A
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US2764941A
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US2880674A
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US2809592A
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US2842064A
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US2809588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |