US3553969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged oil storage structure
Assignee: Chicago Bridge and Iron Co
•
Filing: 1968-12-23
•
Granted: 1971-01-12
•
Expires: 1988-12-23
Abstract
Abstract AN OFFSHORE STRUCTURE HAVING AN ELONGATED SHAFT VERTICALLY POSITIONED IN A BODY OF WATER AND PIVOTALLY CONNECTED AT ITS BOTTOM END TO A WEIGHT MEANS ON THE FLOOR OF THE BODY OF WATER. THE WEIGHT MEANS CAN BE A TANK FOR STORING OIL.
Inventors
- 👤 Robert S Chamberlin
- 👤 William A Davis
- 👤 James E Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:44
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/44; B63B35/4406; E; E21; E21B; E21B43/00; E21B43/01; E21B7/00; E21B7/12; E21B7/124; E21B7/128
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |