US2980809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-conductor devices for rectifying and clipping large electrical currents
Assignee: Individual
•
Filing: 1957-12-09
•
Granted: 1961-04-18
•
Expires: 1977-12-09
Abstract
No abstract record available.
Inventors
- 👤 Teszner Stanislas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:52
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/002; C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/388; G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; H02; H02H; H02H7/00; H02H7/10; H02H7/12; H02H7/125; H02H7/127; H02H9/00; H02H9/02; H02H9/025; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/19; H02M7/21; H02M7/217; H02M7/25; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2666814A
Cited
US2836797A
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US2891171A
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US2869000A
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US2868455A
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US2825822A
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US2885572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |