Patent US3238340A successfully refreshed from Google Patents.
US3238340A
Expired / Lapsed
US
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Gas-blast circuit breaker
Assignee: Rockwell Automation Switzerland GmbH
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Filing: 1962-08-15
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Granted: 1966-03-01
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Expires: 1982-08-15
Abstract
No abstract record available.
Inventors
- 👤 Lerch Hans Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:52
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/12; H01H33/121; H01H33/122; H01H33/70; H01H33/7015; H01H33/7069; H01H33/88; H01H33/882
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |