US2393267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making laminated abrasive articles
Assignee: Unifrax I LLC
•
Filing: 1944-06-27
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Granted: 1946-01-22
•
Expires: 1964-06-27
Abstract
No abstract record available.
Inventors
- 👤 Norman P Robie
- 👤 Robert G Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
B; B24; B24D; B24D18/00; B24D18/0045; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075
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) | 1949-01-21 | 1949-07-23 | 1950-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-21 | 1953-07-23 | 1954-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-21 | 1957-07-23 | 1958-01-22 | $7700.00 | Window Closed / Lapsed |