Patent US1977997A successfully refreshed from Google Patents.
Patent US1616531A successfully refreshed from Google Patents.
US1616531A
Expired / Lapsed
US
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Cutting-off abrasive wheel
Assignee: Saint Gobain Abrasives Inc
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Filing: 1922-08-08
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Granted: 1927-02-08
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Expires: 1942-08-08
Abstract
No abstract record available.
Inventors
- 👤 Clarence R King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:37
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-02-07 | 1930-08-09 | 1931-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-02-07 | 1934-08-09 | 1935-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-02-07 | 1938-08-09 | 1939-02-08 | $7700.00 | Window Closed / Lapsed |