US2550752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll-stabilizing oscillating fin installation on ships
Assignee: Brown Brothers and Co Ltd
•
Filing: 1946-03-08
•
Granted: 1951-05-01
•
Expires: 1966-03-08
Abstract
No abstract record available.
Inventors
- 👤 Allan James Foggo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:59
CPC Classifications
B; B63; B63B; B63B39/00; B63B39/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US22002A
Cited
DE497046C
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US1800365A
Cited
GB373656A
Cited
US2040984A
Cited
US2099380A
Cited
US2198295A
Cited
US2223562A
Cited
US2369832A
Cited
US2435922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |