Patent US2543979A successfully refreshed from Google Patents.
US2543979A
Expired / Lapsed
US
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Impact wrench torque control
Assignee: Chicago Pneumatic Tool Co LLC
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Filing: 1946-01-31
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Granted: 1951-03-06
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Expires: 1966-01-31
Abstract
No abstract record available.
Inventors
- 👤 Spencer B Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/14; B25B23/145; B25B23/1453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2068745A
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US2127003A
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US2256781A
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US2261204A
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US2373664A
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US2384399A
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US2427453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |