US2447652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Westinghouse Electric Corp
•
Filing: 1942-10-30
•
Granted: 1948-08-24
•
Expires: 1962-10-30
Abstract
No abstract record available.
Inventors
- 👤 Oliver S Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:59
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/40; H01H71/405; H01H71/50; H01H71/52; H01H71/522; H01H71/523; H01H71/04; H01H2071/046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
SE95895C1
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US535069A
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US570419A
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US677353A
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US2027238A
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US2048114A
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US2043306A
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US2035743A
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US2046701A
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US2353756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |