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经营范围
发明名称
Raceway network
摘要
申请公布号
US2950575(A)
申请公布日期
1960.08.30
申请号
US19580708715
申请日期
1958.01.13
申请人
AUGUST HELLWIG
发明人
HELLWIG AUGUST
分类号
E04C1/39
主分类号
E04C1/39
代理机构
代理人
主权项
地址
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