Patent US3443185A successfully refreshed from Google Patents.
US3443185A
Expired / Lapsed
US
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Circuitry and method of striking thyristors in inverse-parallel operation
Assignee: Individual
•
Filing: 1966-08-02
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Granted: 1969-05-06
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Expires: 1986-08-02
Abstract
No abstract record available.
Inventors
- 👤 Kurt Wilhelm Gunter Sowa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/08; H02M1/084; H02M1/081; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/257; H02M5/2573; H02P; H02P27/00; H02P27/02; H02P27/026; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/725
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |