Patent US4736391A successfully refreshed from Google Patents.
US2924946A
Expired / Lapsed
US
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Submersible barge for off-shore drilling
Assignee: Individual
•
Filing: 1954-12-03
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Granted: 1960-02-16
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Expires: 1974-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jerome L Goldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:37
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/027; E02B17/0017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US122463A
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US126204A
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US128713A
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FR998974A
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GB185255A
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US2235684A
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US2589153A
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US2540878A
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US2622404A
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US2612759A
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US2870609A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |