US2810463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction type reversible drive unit for wrenches and the like
Assignee: Individual
•
Filing: 1953-05-11
•
Granted: 1957-10-22
•
Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Harry D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:31
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/46; B25B13/461; B25B13/462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US255957A
Cited
US1704062A
Cited
US2138331A
Cited
DE693258C
Cited
US2512755A
Cited
US2446064A
Cited
US2595213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |