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经营范围
发明名称
Coupling means
摘要
申请公布号
GB644595(A)
申请公布日期
1950.10.11
申请号
GB19470019770
申请日期
1947.07.23
申请人
PRODUCTIVE INVENTIONS, INC.
发明人
分类号
B60S1/34
主分类号
B60S1/34
代理机构
代理人
主权项
地址
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