Patent US2554974A successfully refreshed from Google Patents.
US2554974A
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US
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Electric circuit breaker
Assignee: General Electric Co
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Filing: 1948-04-06
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Granted: 1951-05-29
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Expires: 1968-04-06
Abstract
No abstract record available.
Inventors
- 👤 John W Beatty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:47
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/12; H01H33/121; H01H33/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1697309A
Cited
US2089285A
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US2310905A
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US2303492A
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US2249444A
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US2364981A
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US2477788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |