US3516488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for introducing tools or instruments into an underwater well from a floating installation
Assignee: IFP Energies nouvelles
•
Filing: 1967-12-26
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Granted: 1970-06-23
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Expires: 1987-12-26
Abstract
No abstract record available.
Inventors
- 👤 Philippe Joubert
- 👤 Andre Castela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:18
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/01; E21B17/017; B; B63; B63C; B63C11/00; B63C11/34; B63C11/36; B63C11/38; E21B19/00; E21B19/08; E21B19/09; E21B33/00; E21B33/02; E21B33/03; E21B33/068; E21B33/076; E21B47/00; E21B47/001; E21B7/00; E21B7/12; E21B7/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3142343A
Cited
US3142344A
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US3276746A
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US3277969A
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US3336975A
Cited
US3367421A
Cited
US3378067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |