Patent US3548648A successfully refreshed from Google Patents.
US3548648A
Expired / Lapsed
US
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Sonic worn cutting tool detector
Assignee: Carboloy Inc
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Filing: 1968-04-15
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Granted: 1970-12-22
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Expires: 1988-04-15
Abstract
No abstract record available.
Inventors
- 👤 Bjorn Weichbrodt
- 👤 Stephen E Grabkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:03
CPC Classifications
B; B23; B23Q; B23Q17/00; B23Q17/09; B23Q17/0952; B23Q17/098; B23Q15/00; B23Q15/007; B23Q15/12; B23Q17/0904; B23Q17/0919; B23Q17/0928; B23Q17/0957; G; G01; G01N; G01N29/00; G01N29/04
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |