US2233175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of abrasive coated articles
Assignee: Unifrax I LLC
•
Filing: 1940-03-28
•
Granted: 1941-02-25
•
Expires: 1960-03-28
Abstract
No abstract record available.
Inventors
- 👤 Romie L Melton
- 👤 Raymond C Benner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:00
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/001; B24D11/005; Y; Y10; Y10S; Y10S264/00; Y10S264/46
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) | 1944-02-25 | 1944-08-26 | 1945-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-25 | 1948-08-26 | 1949-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-25 | 1952-08-26 | 1953-02-25 | $7700.00 | Window Closed / Lapsed |