US2960833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine foundation structure
Assignee: Individual
•
Filing: 1955-11-10
•
Granted: 1960-11-22
•
Expires: 1975-11-10
Abstract
No abstract record available.
Inventors
- 👤 John T Hayward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:10
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/027; E02B17/021; E02B2017/0056; E02B2017/0073; E02B2017/0086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1367115A
Cited
US1749958A
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US1917011A
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US2151394A
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US2325993A
Cited
US2470312A
Cited
US2589146A
Cited
FR1004090A
Cited
US2771747A
Cited
US2667038A
Cited
US2892314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |