Patent US2875579A successfully refreshed from Google Patents.
US2660643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Westinghouse Electric Corp
•
Filing: 1951-10-16
•
Granted: 1953-11-24
•
Expires: 1971-10-16
Abstract
No abstract record available.
Inventors
- 👤 Toth Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:46
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/50; H01H71/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |