US2968930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile self-erecting marine platforms
Assignee: Offshore Structures & Service Co
•
Filing: 1955-10-12
•
Granted: 1961-01-24
•
Expires: 1975-10-12
Abstract
No abstract record available.
Inventors
- 👤 Ivan W Mangone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:03
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/021; E02B17/027; E02B2017/0056; E02B2017/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US131746A
Cited
US1531371A
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US2430014A
Cited
US2621485A
Cited
US2608829A
Cited
US2600761A
Cited
US2622404A
Cited
US2581098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |