US2746550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of casing from wells
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1953-06-02
•
Granted: 1956-05-22
•
Expires: 1973-06-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Milton E Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:58
CPC Classifications
E; E21; E21B; E21B19/00; E21B29/00; E21B29/02; E21B31/00; E21B47/00; E21B47/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |