US2525494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1945-12-22
•
Granted: 1950-10-10
•
Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 Leon R Ludwig
- 👤 Benjamin P Baker
- 👤 Winthrop M Leeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:22
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/88; H01H33/94; H01H33/96; H01H33/7015; H01H33/7023; H01H33/703; H01H33/98
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1899612A
Cited
US1955214A
Cited
US2061945A
Cited
US2235901A
Cited
US2292547A
Cited
US2304529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |