Patent US2703064A successfully refreshed from Google Patents.
US2703064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sailboat having side keels
Assignee: Individual
•
Filing: 1951-05-15
•
Granted: 1955-03-01
•
Expires: 1971-05-15
Abstract
No abstract record available.
Inventors
- 👤 Hill Myron Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:45
CPC Classifications
B; B63; B63B; B63B41/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US874031A
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US917896A
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US1356300A
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US1709219A
Cited
US1885198A
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US2170914A
Cited
US2224482A
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US2572623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |