US2660640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1949-12-06
•
Granted: 1953-11-24
•
Expires: 1969-12-06
Abstract
No abstract record available.
Inventors
- 👤 Wolf Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/06; H01H1/065; H01C; H01C10/00; H01C10/10; H01C10/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1494070A
Cited
US1955248A
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US1982690A
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US1981468A
Cited
US2011697A
Cited
US1994534A
Cited
US2238893A
Cited
US2231160A
Cited
US2532876A
Cited
US2500953A
Cited
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 |