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US1546115A
Expired / Lapsed
US
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Vitreous bonded silicon-carbide abrasive article
Assignee: Saint Gobain Abrasives Inc
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Filing: 1920-02-16
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Granted: 1925-07-14
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Expires: 1940-02-16
Abstract
No abstract record available.
Inventors
- 👤 Milton F Beecher
- 👤 Klein Abraham Albert
- 👤 Wallace W Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:50
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/14
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) | 1928-07-13 | 1929-01-12 | 1929-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-07-13 | 1933-01-12 | 1933-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-07-13 | 1937-01-12 | 1937-07-14 | $7700.00 | Window Closed / Lapsed |