Patent US2519291A successfully refreshed from Google Patents.
US2519291A
Expired / Lapsed
US
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Delayed electromagnetic trip circuit breaker
Assignee: Westinghouse Electric Corp
•
Filing: 1947-05-17
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Granted: 1950-08-15
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Expires: 1967-05-17
Abstract
No abstract record available.
Inventors
- 👤 Sandin Jerome
- 👤 Herbert L Rawlins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:52
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/44; H01H71/443
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1123288A
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US1154359A
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US1293697A
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US2411800A
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US2357959A
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US2398187A
Cited
US2439165A
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US2451962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |