US3418554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistorized gating circuit for high voltage controlled rectifiers
Assignee: Electromagnetic Industries Inc
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Filing: 1965-10-23
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Granted: 1968-12-24
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Raymond H Legatti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:56
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/725; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/125
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) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |