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发明名称
MACHINES WITH ONE PHASE AND POLY-PHASE ELECTROMAGNETIC INDICATION, WHICH HAS CONTROLLED POLAR MAGNETIC SIMETRY
摘要
申请公布号
YU158287(A)
申请公布日期
1990.04.30
申请号
YU19870001582
申请日期
1987.08.26
申请人
SPC HOLDING CO INC
发明人
ROBERTS G
分类号
H02K3/16;H02K17/28;(IPC1-7):H02K17/04;H02K17/12;H02K17/16
主分类号
H02K3/16
代理机构
代理人
主权项
地址
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