Patent US2821596A successfully refreshed from Google Patents.
US2821596A
Expired / Lapsed
US
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Trip device for circuit breakers
Assignee: Westinghouse Electric Corp
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Filing: 1954-06-21
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Granted: 1958-01-28
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Alexander C Bires
- 👤 Thomas W Slebodnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:23
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/1054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2178083A
Cited
US2318279A
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US2294838A
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US2426880A
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US2411351A
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GB571569A
Cited
US2516027A
Cited
US2574093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |