Patent US2491133A successfully refreshed from Google Patents.
US2491133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starting wrench
Assignee: Individual
•
Filing: 1947-10-27
•
Granted: 1949-12-13
•
Expires: 1967-10-27
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Randrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:50
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/48; B25B13/481; B25B17/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US173930A
Cited
US1265144A
Cited
US1500831A
Cited
US1730811A
Cited
US2341775A
Cited
US2394562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |