US2578667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode for electrolytic condensers
Assignee: Individual
•
Filing: 1946-09-25
•
Granted: 1951-12-18
•
Expires: 1966-09-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:51
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/048; H01G9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2037848A
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US2206050A
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US2146029A
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US2232484A
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US2280789A
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GB503370A
Cited
US2177819A
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US2299228A
Cited
US2232320A
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US2310932A
Cited
US2299667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |