US3568368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous diamond girdle polishing machine
Assignee: Individual
•
Filing: 1968-06-03
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Granted: 1971-03-09
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Expires: 1988-06-03
Abstract
Abstract A CONTINUOUS DIAMOND GIRDLE POLISHING MACHINE COMPRISES A DIAMOND HOLDER DRIVEN ABOUT THE AXIS PERPENDICULAR TO THE PLANE OF THE DIAMOND GIRDLE, A POLISHING WHEEL DRIVEN ABOUT A HORIZONTAL AXIS, AND AN OSCILLATING BAR ACTING AGAINST ONE OF THE ABOVE, PREFERABLY THE DIAMOND HOLDER, TO EFFECT A CONTINUOUS RECIPROCATION OF THE DIAMOND ACROSS THE POLISHING WHEEL DURING THE POLISHING OPERATION.
Inventors
- 👤 Efraim Gwircman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:51
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/16; B24B9/168; B24B47/00; B24B47/02; B24B47/06
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |