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经营范围
发明名称
HELICAL FILTER
摘要
申请公布号
JPH03191601(A)
申请公布日期
1991.08.21
申请号
JP19890332442
申请日期
1989.12.21
申请人
TOUDAI MUSEN KK
发明人
HIROTA KIYOSHI
分类号
H01P1/20;H01P7/00;H03H7/075
主分类号
H01P1/20
代理机构
代理人
主权项
地址
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