Patent US3308881A successfully refreshed from Google Patents.
US3308881A
Expired / Lapsed
US
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Method and apparatus for offshore well completion
Assignee: Chevron USA Inc
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Filing: 1962-11-05
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Granted: 1967-03-14
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Expires: 1982-11-05
Abstract
No abstract record available.
Inventors
- 👤 Edward T Chan
- 👤 William R Postlewaite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/01; E21B43/013; E21B43/0135
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
APPARATUS FOR CONNECTING AN END OF A PIPELINE TO A SUBMERGED BASE COMPRISING A PLATFORM POSITIONED IN A BODY OF WATER ABOVE A SUBMERGED BASE, A PULLING MEANS EXTENDING FROM SAID PLATFORM DOWNWARDLY TO SAID BASE, MEANS MOUNTING THE LOWER END PORTION OF SAID PULLING MEANS ON SAID BASE FOR LONGITUDINAL MOVEMENT OF SAID PULLING MEANS RELATIVE TO SAID BASE, MEANS ON SAID PLATFORM FOR PULLING THE LOWER END OF SAID PULLING MEANS TOWARD SAID BASE, A PIPE LINE, MEANS FOR DETACHABLY CONNECTING THE LOWER END OF SAID PULLING MEANS TO AN END OF SAID PIPELINE, SECURING MEANS FOR SAID END OF SAID PIPELINE ON SAID BASE, SAID PULLING MEANS BEING DISPOSED TO PULL SAID END OF SAID PIPELINE INTO ENGAGEMENT WITH SAID SECURING MEANS.
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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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |