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US2498183A
Expired / Lapsed
US
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Transformer
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1947-09-17
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Granted: 1950-02-21
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Expires: 1967-09-17
Abstract
No abstract record available.
Inventors
- 👤 Scharli Rudolf
- 👤 Meyerhans August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:08
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1249800A
Cited
DE564817C
Cited
US1940840A
Cited
GB416541A
Cited
US2116404A
Cited
US2217442A
Cited
US2288201A
Cited
US2348239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |