Patent US2961514A successfully refreshed from Google Patents.
US2961514A
Expired / Lapsed
US
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Circuit interrupter
Assignee: S&C Electric Co
•
Filing: 1959-01-19
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Granted: 1960-11-22
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Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 Sigurd I Lindell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:22
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/38; H01H85/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2226838A
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US2497707A
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US2599187A
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US2662138A
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US2750470A
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US2840668A
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US2929900A
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US2877322A
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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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |