US2918031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catamaran
Assignee: Individual
•
Filing: 1957-02-04
•
Granted: 1959-12-22
•
Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Charles F Gunderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:47
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/04; B63B1/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR963767A
Cited
US652876A
Cited
US987059A
Cited
US1000786A
Cited
US1113313A
Cited
US1644725A
Cited
US1679630A
Cited
US2099438A
Cited
US2376753A
Cited
US2700780A
Cited
US2773273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |