US2502992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1943-12-16
•
Granted: 1950-04-04
•
Expires: 1963-12-16
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Rawlins
- 👤 Harold H Fahone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:41
CPC Classifications
H; H01; H01H; H01H85/00; H01H85/02; H01H85/38; H01H85/04; H01H85/041; H01H85/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1545550A
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US1696605A
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US1927905A
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US1966901A
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US1849875A
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US2013427A
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GB450970A
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US2157906A
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US2209823A
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US2230207A
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US2142356A
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US2309013A
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US2337504A
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US2337495A
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US2354134A
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US2414344A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |