US3043255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling
Assignee: Superior Oil Co
•
Filing: 1957-09-23
•
Granted: 1962-07-10
•
Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Robert F Bauer
- 👤 Stratton Hal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:18
CPC Classifications
E; E21; E21B; E21B15/00; E21B15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US285628A
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US516032A
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US2092511A
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US2248051A
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US2334992A
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US2332306A
Cited
US2373355A
Cited
US2456104A
Cited
US2399656A
Cited
US2515540A
Cited
US2551066A
Cited
US2482788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |