Patent US2743396A successfully refreshed from Google Patents.
US2743396A
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Ground distance relay
Assignee: Westinghouse Electric Corp
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Filing: 1952-08-16
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Granted: 1956-04-24
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Expires: 1972-08-16
Abstract
No abstract record available.
Inventors
- 👤 Shirley L Goldsborough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:48
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/26; H02H7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1745386A
Cited
US2320861A
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US2405079A
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US2380164A
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US2408208A
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US2426062A
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US2584765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |