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发明名称
Packing ring
摘要
申请公布号
US1793916(A)
申请公布日期
1931.02.24
申请号
US19240722480
申请日期
1924.06.26
申请人
DYKEMAN REUBEN G
发明人
DYKEMAN REUBEN G.
分类号
F16J15/20
主分类号
F16J15/20
代理机构
代理人
主权项
地址
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