Patent US2996615A successfully refreshed from Google Patents.
US2996615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsurface exploration
Assignee: Texaco Inc
•
Filing: 1958-01-02
•
Granted: 1961-08-15
•
Expires: 1978-01-02
Abstract
No abstract record available.
Inventors
- 👤 Alexander S Mckay
- 👤 Edmond F Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:27
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/11; E21B47/111
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2433718A
Cited
US2805346A
Cited
US2749444A
Cited
US2765412A
Cited
US2835819A
Cited
US2700734A
Cited
US2868506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |