Patent US2960131A successfully refreshed from Google Patents.
US2960131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw holding attachment for screwdrivers
Assignee: Individual
•
Filing: 1958-06-03
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Granted: 1960-11-15
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Expires: 1978-06-03
Abstract
No abstract record available.
Inventors
- 👤 Robert A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:50
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/02; B25B23/08; B25B23/10; B25B23/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2632488A
Cited
US2745304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |