US2963641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exploration of earth formations associated with petroleum deposits
Assignee: Shell USA Inc
•
Filing: 1958-08-01
•
Granted: 1960-12-06
•
Expires: 1978-08-01
Abstract
No abstract record available.
Inventors
- 👤 Robert H Nanz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:16
CPC Classifications
G; G01; G01V; G01V9/00; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223; G01N29/00; G01N29/02; G01N29/024; G01N33/00; G01N33/24; G01N33/241; G01N2291/00; G01N2291/02; G01N2291/024; G01N2291/02416; G01N2291/028; G01N2291/02863
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2396935A
Cited
US2784796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |