US2644053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-speed circuit breaker operating mechanism
Assignee: Westinghouse Electric Corp
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Filing: 1951-02-10
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Granted: 1953-06-30
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Expires: 1971-02-10
Abstract
No abstract record available.
Inventors
- 👤 Harry J Lingal
- 👤 Jr Joseph D Findley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:08
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/30; H01H2003/3057; H01H3/60; Y; Y10; Y10T; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |