Patent US2913556A successfully refreshed from Google Patents.
US2913556A
Expired / Lapsed
US
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Circuit interrupters
Assignee: Westinghouse Electric Corp
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Filing: 1956-03-14
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Granted: 1959-11-17
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Expires: 1976-03-14
Abstract
No abstract record available.
Inventors
- 👤 Winthrop M Leeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:26
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/14; H01H33/70; H01H33/88; H01H33/90; H01H33/91; H01H33/98
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB312376A
Cited
US1860337A
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US2253009A
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US2283693A
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US2394046A
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US2467788A
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US2465203A
Cited
US2420889A
Cited
US2675446A
Cited
US2809259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |