US2335902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive article and manufacture
Assignee: Unifrax I LLC
•
Filing: 1941-11-24
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Granted: 1943-12-07
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Expires: 1961-11-24
Abstract
No abstract record available.
Inventors
- 👤 Albert L Ball
- 👤 Raymond C Benner
- 👤 Romie L Melton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:23
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/14; B24D13/16; B24D18/00; B24D9/00; B24D9/006; Y; Y10; Y10S; Y10S425/00; Y10S425/03; Y10T; Y10T428/00; Y10T428/21; Y10T428/218
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) | 1946-12-06 | 1947-06-07 | 1947-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-06 | 1951-06-07 | 1951-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-06 | 1955-06-07 | 1955-12-07 | $7700.00 | Window Closed / Lapsed |