Patent US3391358A successfully refreshed from Google Patents.
US3391358A
Expired / Lapsed
US
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Circuit breaker with improved magnetic trip means
Assignee: Westinghouse Electric Corp
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Filing: 1965-03-02
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Granted: 1968-07-02
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Expires: 1985-03-02
Abstract
No abstract record available.
Inventors
- 👤 Walter V Bratkowski
- 👤 Raymond J Radus
- 👤 Frisch Erling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:56
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/32; H01H71/321; H01H71/323; H01H71/50; H01H71/505; H01H2071/506; H01H71/1072
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |