Patent US3394760A successfully refreshed from Google Patents.
US3394760A
Expired / Lapsed
US
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Operations in submarine and other wells
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1967-03-20
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Granted: 1968-07-30
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Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Childers
- 👤 Kenneth A Kline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:54
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/08; E21B37/00; E21B37/02; E21B37/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3163226A
Cited
US3346045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |