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经营范围
发明名称
Veraenderlicher Frequenzwaehler
摘要
申请公布号
DE1947814(A1)
申请公布日期
1970.07.02
申请号
DE19691947814
申请日期
1969.09.22
申请人
WESTERN ELECTRIC COMPANY INC.
发明人
ALLEN GARDNER,WILLIAM
分类号
H03C3/22
主分类号
H03C3/22
代理机构
代理人
主权项
地址
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