US3543121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jerk limit circuit for traction motor control systems
Assignee: Westinghouse Electric Corp
•
Filing: 1968-03-06
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Granted: 1970-11-24
•
Expires: 1988-03-06
Abstract
No abstract record available.
Inventors
- 👤 Lalan G Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:42
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/20; H; H02; H02H; H02H9/00; H02H9/001; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T10/72; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2929980A
Cited
US3163812A
Cited
US3059129A
Cited
US3350612A
Cited
US3337786A
Cited
US3317756A
Cited
US3440451A
Cited
US3387205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |