Patent US2571361A successfully refreshed from Google Patents.
US2571361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat trailer and hoisting mechanism therefor
Assignee: Individual
•
Filing: 1948-05-18
•
Granted: 1951-10-16
•
Expires: 1968-05-18
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Harmanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:23
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/105
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1630800A
Cited
US1909689A
Cited
US2058473A
Cited
US2219401A
Cited
US2281507A
Cited
US2361951A
Cited
US2398274A
Cited
US2433598A
Cited
US2389338A
Cited
US2444231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |