Patent US2821600A successfully refreshed from Google Patents.
US2821600A
Expired / Lapsed
US
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Circuit breaker operating mechanism
Assignee: ITE Circuit Breaker Co
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Filing: 1953-08-14
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Granted: 1958-01-28
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Expires: 1973-08-14
Abstract
No abstract record available.
Inventors
- 👤 Charlotte H Ridgley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:05
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1360280A
Cited
US1523266A
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US1669106A
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US1953789A
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US2057093A
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US2127813A
Cited
GB541281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |