Patent US3524990A successfully refreshed from Google Patents.
US3524990A
Expired / Lapsed
US
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Inverter circuit with saturable reactor current limiting
Assignee: Nortel Networks Ltd
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Filing: 1967-02-08
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Granted: 1970-08-18
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Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 Chandra K Bajpai
- 👤 Rabindra N Basu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:45
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H03; H03K; H03K3/00; H03K3/02; H03K3/45; H03K3/53; H03K3/57
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) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |