US2576744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension attachment for boats
Assignee: Individual
•
Filing: 1947-07-24
•
Granted: 1951-11-27
•
Expires: 1967-07-24
Abstract
No abstract record available.
Inventors
- 👤 Emil S Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:05
CPC Classifications
B; B63; B63B; B63B39/00; B63B39/06; B63B39/061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US767827A
Cited
US1752406A
Cited
US1855076A
Cited
US1911192A
Cited
US2144111A
Cited
US2212088A
Cited
US2218264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |