US2725027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple unit barge hull construction
Assignee: H H & N A Hardin Co
•
Filing: 1951-11-21
•
Granted: 1955-11-29
•
Expires: 1971-11-21
Abstract
No abstract record available.
Inventors
- 👤 Clarence W Brandon
- 👤 Marlow Harry
- 👤 James E Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:49
CPC Classifications
B; B63; B63B; B63B3/00; B63B3/02; B63B3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB108152A
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GB194238A
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GB226602A
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US2055369A
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US2120286A
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US2217090A
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US2401453A
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US2600015A
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US2539453A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |