Patent US2946197A successfully refreshed from Google Patents.
US2946197A
Expired / Lapsed
US
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Apparatus for joining of submerged structures
Assignee: Christiani & Nielsen
•
Filing: 1957-04-11
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Granted: 1960-07-26
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Expires: 1977-04-11
Abstract
No abstract record available.
Inventors
- 👤 Lassen-Nielsen Morten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:06
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/063; E02D29/073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |