Patent CA588910A successfully refreshed from Google Patents.
CA950559A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Control device for electric-motor drives of rail vehicles
Assignee: BBC Brown Boveri AG Switzerland
•
Filing: 1972-05-04
•
Granted: 1974-07-02
•
Expires: 1992-05-04
Abstract
No abstract record available.
Inventors
- 👤 Robert Zwahlen
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-29 22:41
CPC Classifications
B; B60; B60L; B60L3/00; B60L3/10; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/72
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.