US2680170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dashpot controlled circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1950-03-30
•
Granted: 1954-06-01
•
Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 James M Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:07
CPC Classifications
H; H01; H01H; H01H75/00; H01H75/02; H01H75/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1058290A
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US1748497A
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US2308660A
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US2357959A
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US2333604A
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US2528197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |