US3353308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible abrasive disc
Assignee: Individual
•
Filing: 1964-05-08
•
Granted: 1967-11-21
•
Expires: 1984-05-08
Abstract
No abstract record available.
Inventors
- 👤 Zane Riccardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/14; B24D11/00; B24D11/001; B24D11/005; B24D18/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A FLEXIBLE ABRASIVE DISC COMPRISING A KNOWN LAMELLAR, FLEXIBLE, NONMETALLIC SUPPORTING ROUND PLATE, AND A SUBSTANTIAL LAYER OF ABRASIVE MATERIAL SUPPORTED BY SAID ROUND PLATE, SAID ABRASIVE LAYER BEING MADE OF A PLURALITY OF THIN AND UNIFORM ALTERNATELY SUPERPOSED COATINGS OF ADHESIVE MATERIAL AND ABRASIVE GRANULES, SAID ROUND PLATE HAVING A MULTIPLICITY OF INDENTATIONS ON ITS SIDE CONFRONTING SAID ABRASIVE MATERIAL.
Claim 2
Dependent Claim
61 words
A FLEXIBLE ABRASIVE DISC COMPRISING A KNOWN LAMELLAR, FLEXIBLE, NONMETALLIC SUPPORTING ROUND PLATE, AND A SUBSTANTIAL LAYER OF ABRASIVE MATERIAL SUPPORTED BY SAID ROUND PLATE, SAID ABRASIVE LAYER BEING MADE OF A PLURALITY OF THIN AND UNIFORM ALTERNATELY SUPERPOSED COATINGS OF ADHESIVE MATERIAL AND ABRASIVE GRANULES, SAID ROUND PLATE HAVING A MULTIPLICITY OF INDENTATIONS ON ITS SIDE CONFRONTING SAID ABRASIVE MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |