US3467187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stability of a secondary-type crude petroleum recovery system
Assignee: Marathon Oil Co
•
Filing: 1967-09-13
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Granted: 1969-09-16
•
Expires: 1987-09-13
Abstract
No abstract record available.
Inventors
- 👤 William B Gogarty
- 👤 Robert G Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20; C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2867277A
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US2988142A
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US3167118A
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US3266570A
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US3261399A
Cited
US3275075A
Cited
US3370649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |