Patent US2507210A successfully refreshed from Google Patents.
US2507210A
Expired / Lapsed
US
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Gas blast circuit breaker
Assignee: Westinghouse Electric Corp
•
Filing: 1944-11-28
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Granted: 1950-05-09
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Expires: 1964-11-28
Abstract
No abstract record available.
Inventors
- 👤 Leon R Ludwig
- 👤 Benjamin P Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:03
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1794682A
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US2084979A
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US1914875A
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US1965551A
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US2172225A
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US2138382A
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US2284842A
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US2260188A
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US2287578A
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US2262516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |