Patent US2093495A successfully refreshed from Google Patents.
Patent US2574835A successfully refreshed from Google Patents.
US2574835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically opening and closing lifting hook
Assignee: Individual
•
Filing: 1949-05-24
•
Granted: 1951-11-13
•
Expires: 1969-05-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Loney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:16
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/42; B66C1/422
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1832647A
Cited
US2378570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |