Patent US2512783A successfully refreshed from Google Patents.
US2512783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine drilling
Assignee: Individual
•
Filing: 1946-05-04
•
Granted: 1950-06-27
•
Expires: 1966-05-04
Abstract
No abstract record available.
Inventors
- 👤 Augustine J Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:17
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/124; E21B17/00; E21B17/01; E21B7/128
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US873056A
Cited
GB160865A
Cited
US1829304A
Cited
US1998803A
Cited
US2013070A
Cited
US2187871A
Cited
US2171672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |