Patent US2878772A successfully refreshed from Google Patents.
US2878772A
Expired / Lapsed
US
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Stabilizers for ships
Assignee: Individual
•
Filing: 1954-10-06
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Granted: 1959-03-24
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Expires: 1974-10-06
Abstract
No abstract record available.
Inventors
- 👤 Kjekstad Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:15
CPC Classifications
B; B63; B63B; B63B39/00; B63B39/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US650758A
Cited
US1250987A
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GB162927A
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US1533328A
Cited
DE690383C
Cited
US2190617A
Cited
US2224326A
Cited
US2346337A
Cited
US2550752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |