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经营范围
发明名称
Stuffing box
摘要
申请公布号
US1976916(A)
申请公布日期
1934.10.16
申请号
US19330652973
申请日期
1933.01.23
申请人
BLOCK NORMAN L
发明人
BLOCK NORMAN L.
分类号
F16J15/18
主分类号
F16J15/18
代理机构
代理人
主权项
地址
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