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US2662434A
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Power-operated rotary impact wrench
Assignee: MILLERS FALIS Co
•
Filing: 1952-02-28
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Granted: 1953-12-15
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Expires: 1972-02-28
Abstract
No abstract record available.
Inventors
- 👤 Harold H Burkhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:56
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1694270A
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US2028441A
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US1998995A
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US2111280A
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US2100552A
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US2533703A
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US2566661A
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US2583147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |