US3523773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive articles containing a polyimide resin and lead-glass bond
Assignee: Unicorn Industries Ltd
•
Filing: 1967-01-26
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Granted: 1970-08-11
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Expires: 1987-01-26
Abstract
No abstract record available.
Inventors
- 👤 Leo A Sears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:50
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344; B24D3/02; B24D3/04; B24D3/14; B24D3/20; B24D3/28; C; C08; C08K; C08K3/00; C08K3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |