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US2574334A
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Air-blast circuit breaker
Assignee: Merlin Gerin SA
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Filing: 1947-07-23
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Granted: 1951-11-06
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Expires: 1967-07-23
Abstract
No abstract record available.
Inventors
- 👤 Latour Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:28
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2419446A
Cited
US1645288A
Cited
US2331441A
Cited
US2280321A
Cited
US2275885A
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US2440995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |