Patent US3377975A successfully refreshed from Google Patents.
US3377975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passive fin ship stabilizer
Assignee: John J Mcmullen Associates Inc
•
Filing: 1966-03-31
•
Granted: 1968-04-16
•
Expires: 1986-03-31
Abstract
No abstract record available.
Inventors
- 👤 Sheldon B Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:34
CPC Classifications
B; B63; B63B; B63B39/00; B63B39/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1038507A
Cited
US2223562A
Cited
US2346337A
Cited
US3018749A
Cited
US3004510A
Cited
US3192888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |