US2870293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic circuit interrupter integrated with current-limiting fuses
Assignee: Chase Shawmut Co
•
Filing: 1957-10-31
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Granted: 1959-01-20
•
Expires: 1977-10-31
Abstract
No abstract record available.
Inventors
- 👤 William S Edsall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:52
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE434618C
Cited
US2376809A
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US2473196A
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US2523139A
Cited
US2625626A
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US2681398A
Cited
US2766351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |