US2909359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Off-shore drilling
Assignee: Superior Oil Co
•
Filing: 1956-12-24
•
Granted: 1959-10-20
•
Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Robert F Bauer
- 👤 Robert C Mcneill
- 👤 Jerry T Ledbetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2061316A
Cited
US2327693A
Cited
US2572307A
Cited
US2606003A
Cited
US2776817A
Cited
US2783027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |