Patent US2460367A successfully refreshed from Google Patents.
US2460367A
Expired / Lapsed
US
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Method of making abrasive articles
Assignee: Unifrax I LLC
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Filing: 1945-09-20
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Granted: 1949-02-01
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Expires: 1965-09-20
Abstract
No abstract record available.
Inventors
- 👤 Donald B Sharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:14
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/22; B24D5/00; B24D5/02; B24D5/04; Y; Y10; Y10S; Y10S524/00; Y10S524/925
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) | 1952-02-01 | 1952-08-02 | 1953-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-01 | 1956-08-02 | 1957-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-01 | 1960-08-02 | 1961-02-01 | $7700.00 | Window Closed / Lapsed |