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Patent US2791980A successfully refreshed from Google Patents.
US2791980A
Expired / Lapsed
US
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Hull form and construction for metal vessels
Assignee: Individual
•
Filing: 1953-03-30
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Granted: 1957-05-14
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Expires: 1973-03-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Coe M Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:11
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185430A
Cited
US1013024A
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US1805669A
Cited
GB448076A
Cited
GB653656A
Cited
US2347077A
Cited
US2400771A
Cited
FR923443A
Cited
US2665656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |