Patent EP0127244A1 successfully refreshed from Google Patents.
US889989A
Expired / Lapsed
US
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Transformer-regulator.
Assignee: Westinghouse Electric Corp
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Filing: 1906-06-25
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Granted: 1908-06-09
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Expires: 1926-06-25
Abstract
No abstract record available.
Inventors
- 👤 Wilbur H Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:34
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1911-06-09 | 1911-12-09 | 1912-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-06-09 | 1915-12-09 | 1916-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-06-09 | 1919-12-09 | 1920-06-09 | $7700.00 | Window Closed / Lapsed |