Patent US3861761A successfully refreshed from Google Patents.
US2942669A
Expired / Lapsed
US
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Inflating pump for oil well packers
Assignee: Jersey Production Research Co
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Filing: 1957-11-29
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Granted: 1960-06-28
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Expires: 1977-11-29
Abstract
No abstract record available.
Inventors
- 👤 Whitman D Mounce
- 👤 Barry Adelbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:51
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127; E21B33/1272
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US31567A
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US882416A
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US1850218A
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US2222750A
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US2231282A
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US2232199A
Cited
US2778431A
Cited
US2715444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |