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US2953904A
Expired / Lapsed
US
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Submersible barge assembly
Assignee: Individual
•
Filing: 1958-04-03
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Granted: 1960-09-27
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Expires: 1978-04-03
Abstract
No abstract record available.
Inventors
- 👤 Lowell B Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:11
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/021; E02B2017/0056; E02B2017/0073; E02B2017/0086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US494328A
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US927946A
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GB190926891A
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FR795379A
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US2237387A
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US2352370A
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US2430014A
Cited
US2682432A
Cited
US2775869A
Cited
US2837897A
Cited
US2895301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |