Patent US2797278A successfully refreshed from Google Patents.
US2797278A
Expired / Lapsed
US
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Circuit breaker
Assignee: Westinghouse Electric Corp
•
Filing: 1954-10-29
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Granted: 1957-06-25
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Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Francis L Gelzheiser
- 👤 Robert H Flick
- 👤 Howard E Reichert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:57
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/1009; H01H71/50; H01H71/52; H01H71/522; H01H71/524
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2322285A
Cited
US2416170A
Cited
US2624815A
Cited
US2701829A
Cited
US2693516A
Cited
US2678359A
Cited
US2692926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |