US3343306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surfacing system
Assignee: Engelhard Hanovia Inc
•
Filing: 1965-01-11
•
Granted: 1967-09-26
•
Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 Carle W Highberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:23
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/06; B24B7/20; B24B7/22; B24B7/24; B24B7/241; B24D; B24D7/00; B24D7/06; B24D7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
APPARATUS FOR SEQUENTIALLY SURFACING FLAT SHEETS OF GLASS AND SIMILAR MATERIALS INCLUDING A PLURALITY OF SURFACING STATIONS, AT LEAST SOME OF THE SURFACING STATIONS COMPRISING A GRINDING WHEEL INCLUDING A PLURALITY OF CONCENTRIC, FIXED ABRASIVE, ANNULAR GRINDING MEANS HAVING ABRASIVE PARTICLES BONDED THEREIN IN RESPECTIVE PREDETERMINED CONCENTRATIONS AND HAVING SUBSTANTIALLY COPLANAR GRINDING FACES, AT LEAST THE OUTERMOST ONE OF SAID CONCENTRIC GRINDING MEANS HAVING A MATERIALLY LOWER CONCEN-
Claim 2
Dependent Claim
68 words
APPARATUS FOR SEQUENTIALLY SURFACING FLAT SHEETS OF GLASS AND SIMILAR MATERIALS INCLUDING A PLURALITY OF SURFACING STATIONS, AT LEAST SOME OF THE SURFACING STATIONS COMPRISING A GRINDING WHEEL INCLUDING A PLURALITY OF CONCENTRIC, FIXED ABRASIVE, ANNULAR GRINDING MEANS HAVING ABRASIVE PARTICLES BONDED THEREIN IN RESPECTIVE PREDETERMINED CONCENTRATIONS AND HAVING SUBSTANTIALLY COPLANAR GRINDING FACES, AT LEAST THE OUTERMOST ONE OF SAID CONCENTRIC GRINDING MEANS HAVING A MATERIALLY LOWER CONCEN-
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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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |