US2920607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically-actuated operating mechanism for an electric circuit breaker
Assignee: General Electric Co
•
Filing: 1956-12-17
•
Granted: 1960-01-12
•
Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Barkan Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:54
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US612324A
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US1771170A
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US1690457A
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US1680204A
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US1857220A
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US2059082A
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DE733869C
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US2411360A
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US2378270A
Cited
FR1007832A
Cited
US2635581A
Cited
US2720228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |