Patent DE868088C successfully refreshed from Google Patents.
Patent US3531608A successfully refreshed from Google Patents.
US3531608A
Expired / Lapsed
US
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Fluid-blast circuit interrupter with piston assembly and electromagnetic driving means including three coils
Assignee: Westinghouse Electric Corp
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Filing: 1966-09-29
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Granted: 1970-09-29
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Edmond Bateman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:05
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/7015; H01H33/7023; H01H33/02; H01H33/04; H01H33/12; H01H33/14; H01H33/88; H01H33/882
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB514359A
Cited
US2503243A
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US2933575A
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US2930870A
Cited
DE1142201B
Cited
US3238340A
Cited
DE1206056B
Cited
US3315056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |