Patent US1475854A successfully refreshed from Google Patents.
US1475854A
Expired / Lapsed
US
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Motor-control system
Assignee: Westinghouse Electric Corp
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Filing: 1921-03-05
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Granted: 1923-11-27
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Expires: 1941-03-05
Abstract
No abstract record available.
Inventors
- 👤 Henry D Murdock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:20
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/10; B60L15/12; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64
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) | 1926-11-26 | 1927-05-28 | 1927-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-11-26 | 1931-05-28 | 1931-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-11-26 | 1935-05-28 | 1935-11-27 | $7700.00 | Window Closed / Lapsed |