US2564345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch drive mechanism for poweroperated screw drivers and the like
Assignee: KELLER TOOL CO
•
Filing: 1948-06-02
•
Granted: 1951-08-14
•
Expires: 1968-06-02
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Shaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:27
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/14; B25B23/141; F; F16; F16H; F16H13/00; F16H13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2306475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |