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经营范围
发明名称
Hole plug
摘要
申请公布号
US3168961(A)
申请公布日期
1965.02.09
申请号
US19620173673
申请日期
1962.02.16
申请人
YATES CYRIL J
发明人
YATES CYRIL J.
分类号
F16B21/08
主分类号
F16B21/08
代理机构
代理人
主权项
地址
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