Patent US2625677A successfully refreshed from Google Patents.
US2625677A
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Saturable core reactor system
Assignee: ABB Norden Holding AB
•
Filing: 1947-08-21
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Granted: 1953-01-13
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Expires: 1967-08-21
Abstract
No abstract record available.
Inventors
- 👤 Landau Frans
- 👤 Carlsson Johan Eric
- 👤 Hedstrom Sven Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:36
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/02; H02P1/04; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1730254A
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DE643586C
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US2114827A
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US2118440A
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US2414430A
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US2306998A
Cited
US2286370A
Cited
GB558318A
Cited
US2431312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |