Patent US3268256A successfully refreshed from Google Patents.
Patent US2615087A successfully refreshed from Google Patents.
Patent US5091992A successfully refreshed from Google Patents.
Patent CA610372A successfully refreshed from Google Patents.
Patent US2283382A successfully refreshed from Google Patents.
US2283382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ratchet mechanism
Assignee: Blackhawk Manufacturing Co
•
Filing: 1940-01-18
•
Granted: 1942-05-19
•
Expires: 1960-01-18
Abstract
No abstract record available.
Inventors
- 👤 Mandl Siegmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:05
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/04; B25G1/043; B25B; B25B13/00; B25B13/46; B25B13/461; B25B13/462; B25B13/465
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-05-18 | 1945-11-17 | 1946-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-05-18 | 1949-11-17 | 1950-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-05-18 | 1953-11-17 | 1954-05-19 | $7700.00 | Window Closed / Lapsed |