Patent US2833897A successfully refreshed from Google Patents.
US2833897A
Expired / Lapsed
US
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Means to minimize fusing of circuit breaker contacts
Assignee: Federal Electric Products Co
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Filing: 1953-10-29
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Granted: 1958-05-06
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Expires: 1973-10-29
Abstract
No abstract record available.
Inventors
- 👤 Wallace J Driver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:35
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/02; H01H73/18; H01H1/00; H01H3/00; H01H3/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806188A
Cited
US1944215A
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US1907932A
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US1907430A
Cited
US2182773A
Cited
US2450872A
Cited
US2629791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |