US2824925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic trip circuit interrupters
Assignee: Westinghouse Electric Corp
•
Filing: 1951-06-23
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Granted: 1958-02-25
•
Expires: 1971-06-23
Abstract
No abstract record available.
Inventors
- 👤 George G Grissinger
- 👤 Sandin Jerome
- 👤 Lindstrom Ture
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:31
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/74; H01H71/7463; H01H2071/7481
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US233967A
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GB107289A
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US1360281A
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FR582745A
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US1653102A
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US1696611A
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DE519338C
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US2127869A
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US2203585A
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US2435305A
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US2508178A
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US2432899A
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US2586326A
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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) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |