US2581571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1945-10-24
•
Granted: 1952-01-08
•
Expires: 1965-10-24
Abstract
No abstract record available.
Inventors
- 👤 Benjamin P Baker
- 👤 Mehren Oswald Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:44
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/56; H01H33/04; H01H33/16; H01H33/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE454816C
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GB172658A
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US1987885A
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US2159830A
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US2153400A
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US2279536A
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US2340827A
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USRE22298E
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US2386958A
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US2367934A
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US2381353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |