US2865180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet piling wall structure
Assignee: Great Lakes Dredge and Dock Corp
•
Filing: 1953-12-23
•
Granted: 1958-12-23
•
Expires: 1973-12-23
Abstract
No abstract record available.
Inventors
- 👤 Fridtjof G Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:03
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06; E02B3/066; E02D; E02D29/00; E02D29/02; E02D29/0258; E02D29/0266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1270659A
Cited
US2018423A
Cited
US1942163A
Cited
US2045112A
Cited
US2146333A
Cited
US2388624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |