US2998073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanically set well packer
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1958-08-11
•
Granted: 1961-08-29
•
Expires: 1978-08-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Earnest H Clark
- 👤 William D Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:22
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1291; E21B33/1292
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1524288A
Cited
US2189702A
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US2427330A
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US2633917A
Cited
US2690225A
Cited
US2681113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |