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经营范围
发明名称
Mechanical seal
摘要
申请公布号
US2873127(A)
申请公布日期
1959.02.10
申请号
US19560568807
申请日期
1956.03.01
申请人
WORTHINGTON CORPORATION
发明人
PRATT M. MARGUERITE;JR. CHARLES L. FARR,
分类号
F16J15/34
主分类号
F16J15/34
代理机构
代理人
主权项
地址
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