Patent FR1182936A successfully refreshed from Google Patents.
US2476632A
Expired / Lapsed
US
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Rotary impact tool
Assignee: KELLER TOOL CO
•
Filing: 1947-05-20
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Granted: 1949-07-19
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Expires: 1967-05-20
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Shaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:22
CPC Classifications
B; B25; B25B; B25B21/00; B25B21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2158303A
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US2220711A
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US2160622A
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US2219883A
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US2128761A
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US2196589A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |