US3459264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulating valve assembly between open hole packers and method
Assignee: Halliburton Co
•
Filing: 1967-05-18
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Granted: 1969-08-05
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Expires: 1987-05-18
Abstract
No abstract record available.
Inventors
- 👤 Cleo C Olson
- 👤 John B Blevins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:25
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/087; E21B33/00; E21B33/10; E21B33/12; E21B33/124; E21B34/00; E21B34/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1804620A
Cited
US1980219A
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US2175540A
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US2363290A
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US2847074A
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US2959225A
Cited
US3334907A
Cited
US3306360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |