US2660693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective system for series capacitors
Assignee: Westinghouse Electric Corp
•
Filing: 1949-08-18
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Granted: 1953-11-24
•
Expires: 1969-08-18
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Marbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:59
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/02; H01T1/08; H02; H02H; H02H7/00; H02H7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2041663A
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US2194145A
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US2389007A
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US2433756A
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US2401009A
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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) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |