Patent US2215341A successfully refreshed from Google Patents.
US2215341A
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US
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Motor control system
Assignee: Westinghouse Electric Corp
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Filing: 1939-02-04
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Granted: 1940-09-17
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Expires: 1959-02-04
Abstract
No abstract record available.
Inventors
- 👤 Thelbert L Weybrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/10; B60L15/00; B60L15/20; B60L15/22; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T10/72
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) | 1943-09-17 | 1944-03-18 | 1944-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-09-17 | 1948-03-18 | 1948-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-09-17 | 1952-03-18 | 1952-09-17 | $7700.00 | Window Closed / Lapsed |