US2786166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric unsymmetrically conductive systems, particularly dry-plate rectifiers
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1955-05-23
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Granted: 1957-03-19
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Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Poganski Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:49
CPC Classifications
H; H10; H10P; H10P95/00; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/042; H10D48/043; H10D48/046; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2569347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |