US2711662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power operated rotary impact wrench
Assignee: Individual
•
Filing: 1953-10-29
•
Granted: 1955-06-28
•
Expires: 1973-10-29
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Shaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:42
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/02; B25B21/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219883A
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US2256496A
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US2326347A
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US2425793A
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US2463656A
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US2508997A
Cited
US2514914A
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US2518049A
Cited
US2580607A
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US2663395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |