US3524286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin bonded abrasive wheels containing fibrous and non-fibrous fillers
Assignee: Unifrax I LLC
•
Filing: 1967-04-12
•
Granted: 1970-08-18
•
Expires: 1987-04-12
Abstract
No abstract record available.
Inventors
- 👤 Luis C Wohrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:26
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2873181A
Cited
US2862806A
Cited
US2913858A
Cited
US2943926A
Cited
US2972527A
Cited
US3102011A
Cited
US3387980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |