US2519289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device
Assignee: Westinghouse Electric Corp
•
Filing: 1944-01-29
•
Granted: 1950-08-15
•
Expires: 1964-01-29
Abstract
No abstract record available.
Inventors
- 👤 Walter G Roman
- 👤 Robert H Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:03
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/44; H01T; H01T1/00; H01T1/02; H01T1/08; H01T1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1939371A
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US2003298A
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US2185105A
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US2204320A
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US2098433A
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US2205928A
Cited
US2159039A
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US2137270A
Cited
US2246193A
Cited
US2170337A
Cited
US2249178A
Cited
US2294833A
Cited
US2401586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |