US3335294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for the control and negative polarisation of controlled rectifiers
Assignee: Le Materiel Electrique SW SA
•
Filing: 1965-01-28
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Granted: 1967-08-08
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Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Chauprade Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:28
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H02; H02M; H02M1/00; H02M1/02; H02M1/04; H02M1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3153187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |