Patent US2725446A successfully refreshed from Google Patents.
US2725446A
Expired / Lapsed
US
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Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1950-11-18
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Granted: 1955-11-29
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Expires: 1970-11-18
Abstract
No abstract record available.
Inventors
- 👤 Slepian Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:35
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/18; H01H33/182; H01H33/16; H01H33/164; H01H9/00; H01H9/30; H01H9/44; H01H9/443
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1558277A
Cited
DE691727C
Cited
US2355482A
Cited
US2389592A
Cited
US2367934A
Cited
US2411892A
Cited
US2506991A
Cited
US2485783A
Cited
US2522596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |