Patent US3445838A successfully refreshed from Google Patents.
US2709232A
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Controllable electrically unsymmetrically conductive device
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1953-07-29
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Granted: 1955-05-24
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Expires: 1973-07-29
Abstract
No abstract record available.
Inventors
- 👤 Thedieck Reiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:50
CPC Classifications
H; H10; H10D; H10D99/00; H10D62/00; H10D62/10; H10D84/00; H10D84/60; H10D84/645; H10P; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2415841A
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US2603692A
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US2505633A
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US2666814A
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US2648805A
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US2597028A
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US2561411A
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US2588254A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |