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经营范围
发明名称
PLUGGING DEVICE
摘要
申请公布号
CA382847(A)
申请公布日期
1939.07.25
申请号
CAD382847
申请日期
申请人
WILLIAM T. RAY
发明人
WILLIAM T. RAY
分类号
主分类号
代理机构
代理人
主权项
地址
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