US3412801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retrievable well packer apparatus
Assignee: Schlumberger Technology Corp
•
Filing: 1966-11-08
•
Granted: 1968-11-26
•
Expires: 1986-11-08
Abstract
No abstract record available.
Inventors
- 👤 David E Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:32
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295; E21B33/12955
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2753943A
Cited
US2917114A
Cited
US3223169A
Cited
US3253656A
Cited
US3279542A
Cited
US3338308A
Cited
US3339637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |