US2847533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breakers
Assignee: Federal Pacific Electric Co
•
Filing: 1956-06-11
•
Granted: 1958-08-12
•
Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Paul M Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:42
CPC Classifications
H; H01; H01H; H01H69/00; H01H69/01; H01H71/00; H01H71/10; H01H71/12; H01H71/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1952040A
Cited
US2162577A
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US2308401A
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US2318279A
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US2290399A
Cited
US2345105A
Cited
US2360684A
Cited
US2677026A
Cited
US2703351A
Cited
US2653202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |