Patent US3540162A successfully refreshed from Google Patents.
US3540162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond abrasive tool
Assignee: Saint Gobain Abrasives Inc
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Filing: 1967-02-23
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Granted: 1970-11-17
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Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Paul W Blackmer
- 👤 Gunnar E Hollstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:23
CPC Classifications
B; B24; B24D; B24D18/00; B24D18/0009; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/08; B24D3/34; B24D3/342; B24D7/00; B24D7/18
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |