US2669846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged well drilling equipment anchoring means
Assignee: Individual
•
Filing: 1949-08-23
•
Granted: 1954-02-23
•
Expires: 1969-08-23
Abstract
No abstract record available.
Inventors
- 👤 Shannon Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:25
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US480127A
Cited
US621216A
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US676993A
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US694939A
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US2051926A
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US2534480A
Cited
US2589153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |