Patent US3390644A successfully refreshed from Google Patents.
US2806982A
Expired / Lapsed
US
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Electrolytic condensers
Assignee: International Standard Electric Corp
•
Filing: 1953-05-04
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Granted: 1957-09-17
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Expires: 1973-05-04
Abstract
No abstract record available.
Inventors
- 👤 Holik Ludmilla
- 👤 Nowotny Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:45
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/08; H01G9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1655026A
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US2298938A
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US2410826A
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US2444222A
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US2513556A
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US2505014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |