Patent EP0111587A1 successfully refreshed from Google Patents.
Patent US2894587A successfully refreshed from Google Patents.
US2894587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent well completion apparatus
Assignee: Jersey Production Research Co
•
Filing: 1956-06-08
•
Granted: 1959-07-14
•
Expires: 1976-06-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas B Mcculloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:58
CPC Classifications
E; E21; E21B; E21B41/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1014272A
Cited
US1676785A
Cited
US2117535A
Cited
US2798559A
Cited
US2746550A
Cited
US2745497A
Cited
US2837165A
Cited
US2805718A
Cited
US2785754A
Cited
US2796130A
Cited
US2798558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |