US2585947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic condenser for alternating current power circuits and method of operating the same
Assignee: Individual
•
Filing: 1949-02-03
•
Granted: 1952-02-19
•
Expires: 1969-02-03
Abstract
No abstract record available.
Inventors
- 👤 Lilienfeld Julius Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:19
CPC Classifications
H; H01; H01G; H01G9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US926128A
Cited
US1497430A
Cited
US1567791A
Cited
US1745175A
Cited
US1753912A
Cited
US1999408A
Cited
GB342643A
Cited
GB496113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |