US2503516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for exploiting oil or other mineral deposits underlying submerged areas
Assignee: Individual
•
Filing: 1946-10-16
•
Granted: 1950-04-11
•
Expires: 1966-10-16
Abstract
No abstract record available.
Inventors
- 👤 Raymond D Shrewsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:22
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/18; E21B7/185; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/037; E21B7/12; E21B7/136
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB160865A
Cited
US1998803A
Cited
US2092511A
Cited
US2187871A
Cited
US2171672A
Cited
US2239531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |