Patent US2531697A successfully refreshed from Google Patents.
US2531697A
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Transformer
Assignee: BBC Brown Boveri AG Germany
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Filing: 1947-08-08
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Granted: 1950-11-28
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Expires: 1967-08-08
Abstract
No abstract record available.
Inventors
- 👤 Meycrhans August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:44
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/26; H01F27/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1623345A
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US850863A
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US854278A
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US1140843A
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GB421512A
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US2107973A
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GB482771A
Cited
US2279239A
Cited
US2252461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |