US2811607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Westinghouse Electric Corp
•
Filing: 1954-02-19
•
Granted: 1957-10-29
•
Expires: 1974-02-19
Abstract
No abstract record available.
Inventors
- 👤 Hiller D Dorfman
- 👤 Francis L Gelzheiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:44
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/1009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955327A
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US2050285A
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US2107246A
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US2279737A
Cited
US2302551A
Cited
US2367382A
Cited
US2619561A
Cited
US2668206A
Cited
US2678359A
Cited
US2656440A
Cited
US2673264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |