US2621485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine structure
Assignee: Stanolind Oil and Gas Co
•
Filing: 1947-02-21
•
Granted: 1952-12-16
•
Expires: 1967-02-21
Abstract
No abstract record available.
Inventors
- 👤 Donald W Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:51
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/027; E02B2017/0039
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US759759A
Cited
US1388031A
Cited
US1718006A
Cited
US2210408A
Cited
US2248051A
Cited
US2308743A
Cited
US2352370A
Cited
US2351449A
Cited
US2399656A
Cited
US2422168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |