US2929610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling
Assignee: Superior Oil Co
•
Filing: 1954-12-27
•
Granted: 1960-03-22
•
Expires: 1974-12-27
Abstract
No abstract record available.
Inventors
- 👤 Stratton Hal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:25
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/128; E21B33/00; E21B33/02; E21B33/08; E21B33/085; E21B43/00; E21B43/02; E21B43/10; E21B43/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US342274A
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US631423A
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US873056A
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US905440A
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US987266A
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US1068015A
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US1173355A
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US1707568A
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US1604388A
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US1766628A
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US1908227A
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US2602636A
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US2621023A
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US2669431A
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US2606003A
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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) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |