Invention Grant
- Patent Title: Alternating current transmission system
- Patent Title (中): 交流传动系统
-
Application No.: US68446833Application Date: 1933-08-09
-
Publication No.: US1982875APublication Date: 1934-12-04
- Inventor: KOPPITS CARL G
- Applicant: RAILWAY & IND ENGINEERING CO
- Assignee: Railway & Ind Engineering Co
- Current Assignee: Railway & Ind Engineering Co
- Priority: US68446833 1933-08-09
- Main IPC: H01H9/56
- IPC: H01H9/56
Information query
