Patent US3500911A successfully refreshed from Google Patents.
US3500911A
Expired / Lapsed
US
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Multiple packer distribution valve and method
Assignee: Halliburton Co
•
Filing: 1967-05-18
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Granted: 1970-03-17
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Expires: 1987-05-18
Abstract
No abstract record available.
Inventors
- 👤 David L Farley
- 👤 Harold R Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:07
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/08; E21B33/00; E21B33/10; E21B33/12; E21B33/124; E21B49/00; E21B49/08; E21B49/087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1980219A
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US2373034A
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US2537066A
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US2593520A
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US2667926A
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US2846015A
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US2959225A
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US2920764A
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US3362477A
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US3306360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |