-
公开(公告)号：US2251373A
公开(公告)日：1941-08-05
申请号：US21621638
申请日：1938-06-28
Applicant: ASEA AB
Inventor： BENGT OLSSON
IPC: H01F38/18
CPC classification number: H01F38/18
Search Results
1
records
(took 0.012 seconds)
筛选
AND
AND
过滤
NOT
NOT
Scan to Join
