US2765590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic buffing machine
Assignee: NAT SILVER Co
•
Filing: 1953-11-02
•
Granted: 1956-10-09
•
Expires: 1973-11-02
Abstract
No abstract record available.
Inventors
- 👤 Belejack Stephen
- 👤 Feingold Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:55
CPC Classifications
B; B24; B24B; B24B27/00; B24B27/0069; B24B19/00; B24B19/001; B24B19/002
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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |