Patent US2960767A successfully refreshed from Google Patents.
US2960767A
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US
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Slitting chisel
Assignee: Thor Power Tool Co
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Filing: 1960-03-30
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Granted: 1960-11-22
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Expires: 1980-03-30
Abstract
No abstract record available.
Inventors
- 👤 Jr William Vonhoff
- 👤 Jr Earl Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:55
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |