US2986593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas bubble prevention system for liquid insulated electrical apparatus
Assignee: General Electric Co
•
Filing: 1958-05-15
•
Granted: 1961-05-30
•
Expires: 1978-05-15
Abstract
No abstract record available.
Inventors
- 👤 Herbert B Detrick
- 👤 Kurt H Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:41
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/40; H01F27/402; H01F27/404; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1671492A
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US1689352A
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FR629224A
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US1979407A
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US1982045A
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US2200610A
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US2194604A
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US2464026A
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CH273797A
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US2575726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |