Patent US2996038A successfully refreshed from Google Patents.
US2996038A
Expired / Lapsed
US
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Apparatus for impregnating electrolytic capacitors
Assignee: Sprague Electric Co
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Filing: 1952-10-20
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Granted: 1961-08-15
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Hunicke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:32
CPC Classifications
H; H01; H01G; H01G13/00; H01G13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1254918A
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US2107780A
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US2120816A
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US2288633A
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GB548960A
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US2407462A
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US2657668A
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US2550453A
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US2594096A
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US2637535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |