US3434550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for lightening the load on a subsea conductor pipe
Assignee: Mobil Oil AS
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Filing: 1966-06-06
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Granted: 1969-03-25
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Robert D Townsend Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/128; E21B17/00; E21B17/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE24083E
Cited
US1868400A
Cited
US2726063A
Cited
US2808230A
Cited
US2880965A
Cited
US2923531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |