Patent US3378727A successfully refreshed from Google Patents.
US3378727A
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US
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Circuit breaker for interrupting at zero current and automatically reclosing after unsuccessful interruption
Assignee: Siemens AG
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Filing: 1965-05-14
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Granted: 1968-04-16
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Expires: 1985-05-14
Abstract
No abstract record available.
Inventors
- 👤 Kesselring Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:43
CPC Classifications
H; H01; H01H; H01H75/00; H01H75/02; H01H75/04; H01H33/00; H01H33/02; H01H33/59; H01H33/593; H01H33/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB422775A
Cited
US2196868A
Cited
US2672541A
Cited
GB718985A
Cited
US2849659A
Cited
US2951188A
Cited
US2904660A
Cited
US2898421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |