US2575730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Westinghouse Electric Corp
•
Filing: 1947-03-13
•
Granted: 1951-11-20
•
Expires: 1967-03-13
Abstract
No abstract record available.
Inventors
- 👤 Sandin Jerome
- 👤 Herbert L Rawlins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:59
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34; H01H9/342
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB344988A
Cited
US1963643A
Cited
US2133158A
Cited
US2293513A
Cited
US2353729A
Cited
US2337949A
Cited
US2416164A
Cited
US2445190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |