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经营范围
发明名称
PARAMETRON DEVICES AND METHOD OF MAKING THE SAME
摘要
申请公布号
US3522441(A)
申请公布日期
1970.08.04
申请号
USD3522441
申请日期
1967.08.03
申请人
TDK ELECTRONICS CO. LTD.
发明人
YU HATA
分类号
G11C19/12;H03K3/47;H03K19/162;(IPC1-7):G11C5/02;G11C11/14;G11C11/20
主分类号
G11C19/12
代理机构
代理人
主权项
地址
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