US3532901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thyristor converter
Assignee: ABB Norden Holding AB
•
Filing: 1967-06-12
•
Granted: 1970-10-06
•
Expires: 1987-06-12
Abstract
No abstract record available.
Inventors
- 👤 Nils Hylten-Cavallius
- 👤 Carl Ingvar Boksjo
- 👤 Karl-Erik Olsson
- 👤 Arne Algbrant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:58
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/08; H02M1/088; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3386027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |