US2941420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible torque transmission for power tools
Assignee: Graybill Industries Inc
•
Filing: 1958-12-11
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Granted: 1960-06-21
•
Expires: 1978-12-11
Abstract
No abstract record available.
Inventors
- 👤 Clinton L Graybill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/44; B23G1/46; B23G1/465; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/043; B23Q5/048; F; F16; F16H; F16H3/00; F16H3/44; F16H3/46; F16H3/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2521585A
Cited
US2863334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |