US2476938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker control system
Assignee: Westinghouse Electric Corp
•
Filing: 1945-11-28
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Granted: 1949-07-19
•
Expires: 1965-11-28
Abstract
No abstract record available.
Inventors
- 👤 Carroll M Williams
- 👤 Benjamin I Hayford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:12
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/22; H02H7/222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1170974A
Cited
US1227810A
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US1169251A
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US1725692A
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US1861245A
Cited
US1971921A
Cited
US2005195A
Cited
US2393060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |