Patent US3460618A successfully refreshed from Google Patents.
US3460618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thru-tubing bridge plug
Assignee: Schlumberger Technology Corp
•
Filing: 1967-04-14
•
Granted: 1969-08-12
•
Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Leon Blagg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:26
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/06; E21B33/00; E21B33/10; E21B33/12; E21B33/127; E21B33/1275; E21B33/13; E21B33/134
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2222750A
Cited
US2618344A
Cited
US2629446A
Cited
US2717644A
Cited
US2769498A
Cited
US2978029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-11 | 1973-02-10 | 1973-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-11 | 1977-02-10 | 1977-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-11 | 1981-02-10 | 1981-08-12 | $7700.00 | Window Closed / Lapsed |