Patent US2769880A successfully refreshed from Google Patents.
Patent US2245301A successfully refreshed from Google Patents.
US2245301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of abrasive articles
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1931-11-20
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Granted: 1941-06-10
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Expires: 1951-11-20
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Schacht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:41
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/001; B24D11/005; Y; Y10; Y10S; Y10S101/00; Y10S101/37
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) | 1944-06-09 | 1944-12-09 | 1945-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-09 | 1948-12-09 | 1949-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-09 | 1952-12-09 | 1953-06-10 | $7700.00 | Window Closed / Lapsed |