US3012610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling
Assignee: Superior Oil Co
•
Filing: 1956-07-26
•
Granted: 1961-12-12
•
Expires: 1976-07-26
Abstract
No abstract record available.
Inventors
- 👤 Robert F Bauer
- 👤 Stratton Hal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
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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US1645989A
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US1691787A
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US2187871A
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US2399656A
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US2676787A
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US2783027A
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US2808229A
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US2808230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |