Patent US3524326A successfully refreshed from Google Patents.
US3524326A
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Method and means for neutralizing swell during submarine pipeline laying operations
Assignee: Societe des Grands Travaux de Marseille SA
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Filing: 1968-05-21
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Granted: 1970-08-18
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Expires: 1988-05-21
Abstract
No abstract record available.
Inventors
- 👤 Maurice H Craste
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:01
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/12; F16L1/16; F16L1/18; F16L1/19; F16L1/20; F16L1/225; B; B63; B63H; B63H15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |