US3544885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage stabilising arrangements for alternating current supplies utilizing saturated shunt reactors
Assignee: The General Electric Company PLC
•
Filing: 1968-04-15
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Granted: 1970-12-01
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Expires: 1988-04-15
Abstract
No abstract record available.
Inventors
- 👤 Erich Siegfried Friedlander
- 👤 Sutton Coldfield
- 👤 David John Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:15
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32; H; H02; H02J; H02J3/00; H02J3/18; H02J3/1821; Y; Y02; Y02E; Y02E40/00; Y02E40/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1962910A
Cited
US2182377A
Cited
US2241831A
Cited
US2264151A
Cited
US2561087A
Cited
US3038134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |