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US2689460A
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Offshore platform structure and method of erecting same
Assignee: Individual
•
Filing: 1952-05-19
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Granted: 1954-09-21
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Expires: 1972-05-19
Abstract
No abstract record available.
Inventors
- 👤 Harvey A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:49
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/003; E; E02; E02B; E02B17/00; E02B2017/0039; E02B2017/0047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2352370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |