US2808229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Off-shore drilling
Assignee: Superior Oil Co
•
Filing: 1954-11-12
•
Granted: 1957-10-01
•
Expires: 1974-11-12
Abstract
No abstract record available.
Inventors
- 👤 Rohert F Bauer
- 👤 Robert C Mcneill
- 👤 Jerry T Ledbetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:47
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US285628A
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US732925A
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US1598439A
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US1766628A
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US1771406A
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US2200758A
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US2283510A
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US2476309A
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US2425193A
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US2606003A
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US2665885A
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US2614804A
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US2650068A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |